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Heavier than gold or steel. Gold and silver: which is heavier? How to identify titanium and distinguish stainless steel, aluminum and steel from titanium

Almost all students at school were told by chemistry teachers about the incredible density of the yellow metal. And most of the students asked what is heavier than gold or its counterpart according to the periodic table - lead? It is about 19.3 grams per cubic centimeter. Due to its chemical composition, gold does not enter into any reactions with the environment.

That is why it is so actively used in dentistry. This metal can be not only yellow. It depends on the components included in its composition. However, regardless of the color, products made from this metal are incredibly popular.

The question arises, how does the density of gold compare with the density of other metals? Which element has the largest mass? These and many other questions can be answered in this article.

Use of gold

The demand for yellow metal is determined not only by its use in the production of jewelry and the increase in the state's gold and foreign exchange reserves. It is also very widely used in many other areas.

In industry, gold began to be actively used because of its chemical properties. They are covered with mirrors operating in the far infrared range. This is especially useful when conducting all kinds of nuclear research. Also, gold is very often used for soldering components from various materials.

Another area of application is dentistry. This is due not only to the impossibility of the yellow metal entering into a chemical bond with the human body, but also to its incredible corrosion resistance.

Pharmacology also cannot do without the use of this amazing yellow metal. Gold compounds are now actively used in various medical preparations that save from a wide variety of diseases.

These are not the only uses for gold. With rapid progress, there is more and more need to use the gold content in technological innovations. From this we can conclude that the yellow metal is not only an attribute of luxury, but also a useful technical tool, the value of which is increasing every year.

Silver, like gold, has been known to mankind since ancient times. It is used not only in the manufacture of jewelry, but also for the production of dishes. Previously, silver was very actively used in minting coins. And today you can see some coins containing a little silver. When choosing a precious metal, the question often arises, what is still heavier than gold or another precious metal - silver.

The density of this metal is slightly less than that of lead. It is equal to 10.5 grams per cubic centimeter. This suggests that gold is almost twice as heavy as silver.

In addition to the creation of silverware and various jewelry, this material is very actively used in industry, as well as in the photographic industry.

The main properties that have made this element so widely used in the industrial field are excellent thermal and electrical conductivity, excellent resistance to interaction with the environment, as well as excellent reflectivity.

Rapidly advancing technological progress has markedly reduced the use of silver in the photographic industry. This is due to the fact that, thanks to the introduction of modern technologies, the process of production and use of photographic equipment has become much more accessible to most people. This is what ensured the reduction in the use of silver by more than 3 times.

Due to its bactericidal properties, this metal is very actively used in medicine. At the moment, silver is used for the production of antibacterial patches, as well as the production of filters for water purification from harmful microorganisms.

Silver nitrate used in medicine.

It should be said that the density of lead is almost 10 times less than the density of the noble yellow metal. To understand the density of lead, it should be said that the density of birch or linden is 25 times less. According to the table of densities, lead is in 20th place, and gold is in seventh. From this it is easy to conclude that the yellow metal is much heavier than its opponent.

This element is very well used in the production of various metal structures, as well as in the medical field. This is due to the non-transmission of X-rays. The widespread use of lead in various fields is also associated with the very cheap cost of this metal. Its cost is almost two times less than the cost of aluminum. Another advantage is the relative ease of extraction of this material, which provides a huge supply of supplies to the world market.

It is one of the oldest metals known to man. The first metal products, according to the results of archaeological research, appeared in the fourth millennium BC. Iron is much cheaper than the yellow precious metal. This is due to the high content of iron ore in the bowels. And as they say in a textbook on economics, the greater the demand, the lower the price of the goods.

Unlike gold, iron has several oxidation states, and it interacts very actively with the environment. In terms of iron ore reserves, Russia occupies a leading position in the world.

You should immediately answer the question of which is heavier, such a precious metal as gold or ordinary iron. To answer it, you will need to look at the density of metals. The density of the precious metal is already known, let's find the value for iron. It equals 7.844 grams per cubic centimeter. It follows from this that this metal, with an equal volume, is not only lighter than gold, but also silver and lead.

Platinum

This element has been known since time immemorial, but in Europe, in its pure form, it was obtained in the early 19th century. Platinum is a noble metal, the value of which used to be 2.2 times that of gold. This was due to the very small amount of platinum in the world. For one kilogram of yellow metal, there are about 30 grams of platinum. At this point in time, the value of gold is much higher. This is due to the chemical and physical properties of the metal.

Platinum is a white-silver metal of extraordinary beauty, which, like gold, occupies a leading place among metals. The most important feature of this metal is its strength. Therefore, platinum jewelry does not wear out. In Russia, there are the following samples of platinum - 950,900, 850. Platinum jewelry contains about 95% pure platinum, and gold jewelry contains 750 samples, 75% gold.

Due to its high content, this metal is almost impossible to scratch. That is why it is so widely used in industry. But gold is a different story. Another reason is the fact that all countries' gold and foreign exchange funds consist of gold. This practice has evolved over the centuries and now it is simply pointless to spend decades reforming a well-functioning system.

Surprising is the fact that platinum, for a certain period of time, was considered a waste from gold mining, which was immediately thrown away.

After evaluating the density of the above metals, I wanted to know what would be heavier, gold, which would remain the unsurpassed leader, or platinum. The density of platinum is 21.45 grams per cubic centimeter. From this we can conclude that platinum is heavier than the yellow metal. Therefore, platinum jewelry weighs more than gold.

The heaviest elements

The density of five elements was given above, of which platinum is the heaviest. However, it is not the heaviest element on earth. The density of the heaviest element is 22.61 grams per cubic centimeter. His name is Osmium.

Only this is not a chapel of density. True, this element was created artificially in 1984. They called it Hassium, its density is almost twice that of osmium.

Surprisingly, this is not a chapel either. There are materials many tens of times higher than the Hassian density. However, they are in outer space. The matter contained in white dwarfs can have a density of up to 1000 tons per cubic centimeter. This news shocked the world community.

However, this is not the limit. Neutron stars contain matter with a density of about 500 million tons per cubic centimeter. This figure can easily surpass the density of black holes, however, due to the difficulties of conducting research, this is only theoretical.

And only the table of elements of D.I. Mendeleev will help you, or the table of specific gravities of various substances, and in this case, metals. As for the periodic table, where they operate with the atomic weights of elements, here we can only give a qualitative assessment. a hundred heavier - gold or silver.

And a comparison of the atomic masses of gold (197) and silver (108) decides not in favor of silver, and gives the answer:

gold is heavier than silver.

But to determine the weight specifically by the volume of a substance, you can use the table of specific gravity.

Density of gold = 19321 kg\m^3. silver density \u003d 10500 kg \ m ^ 3.

Which also indicates a heavier volume of gold compared to seber.

And here is the correct answer :). Both bars have the same weight. But the mass is different (it’s even easy to calculate how much). 1 kg of gold occupies a smaller volume (about 50 cc) than 1 kg of silver (95 cc). This means that a greater Archimedean force acts on 1 kg of silver on Earth (!) Therefore, the mass of this ingot is greater. Difference 0.045 cu. dm. Air density 1.29 g/cu.dm. This means that the difference in masses is about 60 mg. A lot for precious metal :). I don't know if anyone has tried to cash in on this, for example, by weighing bars at the pole and at the equator, where the difference will be even in weight!

The answer is simple. Gold is one of the heaviest metals, with the same volume it weighs more than silver. Judge for yourself: the density of gold is 19.3 g/cm3, while the density of silver is 10.5 g/cm3. As you can see, the density of gold is almost twice the density of silver, respectively, with the same volume, a gold ingot will be much heavier than silver.

Gold and silver: which is heavier?

Ever since our school days, we remember how in a chemistry lesson teachers talked about the high density of gold. We were wondering if there is really no metal that could compare with it and what is the density, for example, of silver, lead or iron?

After all, the density of this yellow metal is 19.3 grams per cubic centimeter (a golden ball with a diameter of 46.237 mm has a mass of 1 kg!). Element of the 11th group, the sixth period of the periodic table, atomic number - 79, a simple substance.

Among metals, it occupies the seventh place in terms of density. In front of it are such elements as: osmium (22.61 g/cm3), iridium (22.57 g/cm3), platinum (21.46 g/cm3), rhenium (21.02 g/cm3), neptunium (20 .45 g/cm3), plutonium (19.84 g/cm3). Gold is also a very soft metal - about 2 points out of 10 on the Mohs scale.

It is the density that makes it easy to extract the noble yellow metal. The most common washing can provide a high degree of recovery from the rock. This factor cannot but please the miners of gold, and this alloy does not lose its relevance to this day.

The less impurities in gold, the higher its sample. Accordingly, both the density and the price on the market are higher. It is considered to be the world accepted samples: 375, 500, 585, 750, 958 samples (999 pure gold).

The demand for gold lies not only in its use for the production of jewelry, but also in industrial sectors. One of its applications is medicine and dentistry, due to its resistance to corrosion and oxidation. From this we can conclude that gold is not only a luxury item, but also a technical material, the demand for which is growing every day over the years.

Silver Ag (from lat. Argentum), like gold, has long been known among the population of the planet as a currency metal. Ingots are poured from it, which can be seen and purchased in banks, have their own trial measure. The lower the sample, the more yellow and faded the silver. 720 is considered to be the lowest sample. 960 is the highest standard. It has high plasticity, can be easily polished, forged, which allows you to make jewelry out of it.

In addition to being used in the jewelry industry, it is used for the manufacture of dishes, cutlery, machine and instrument making. Previously, it was widely used for casting coins. Now it is widely used in medicine, as it has bactericidal properties. Silver filters are used to purify water.

Its density is 10.5 grams per cubic centimeter. This is slightly less than the density of lead. Element 11 of the group, the fifth period of the periodic table and has atomic number 47, a simple substance. Silver is a fairly heavy metal, silvery white in color.

It has an extremely high thermal conductivity, which distinguishes it from other metals. Unlike gold, it can be oxidized. Silver is considered to be an alloy of pure silver and other metals. This allows you to improve certain characteristics.

Based on this, we can conclude that the density of the metal can be calculated from the sample number.

With the same volume, the weight of gold is almost twice that of silver. This is indicated by many factors, such as atomic mass: gold - 196, silver - 107, density: gold - 19.3 g / cm³, silver - 10.5 g / cm³

Comparison of gold with other metals

Lead Pb (from lat. Plumbum) is an element of group 14, the sixth period of the periodic table, atomic number is 82. Its density is 11.3 g / cm³, it belongs to heavy metals.

Lead has brilliance, softness, malleability, and has a gray-blue color in the cut. When interacting with air, it is covered with an oxide film, which serves as a kind of protection, but fades over time.

It was used by man in the most ancient metallurgical processes, namely, smelting. Native lead, like gold and silver, is very rare in nature. Most often these are impurities with zinc. It is mined in ores, after which it is processed in shaft furnaces by roasting.

This metal differs from the above in low thermal conductivity, is prone to damage, is easily scratched, cut with a knife. With heating, its density decreases. Also one of its disadvantages is toxicity.

In case of poisoning, sharp sharp pains in the abdomen, convulsions and even fainting are noticed. Lead can accumulate in the kidneys and liver.

So, if we compare gold and lead, then looking at their density, we can conclude that gold again turned out to be heavier.

Next in line is iron. How are things with him? Let's take a closer look at its properties.

Iron Fe (from lat. Ferrum) is an element of the 8th group, the fourth period of the periodic table, atomic number - 26. Density - 7.874 g / cm³.

It ranks second in abundance in the earth's crust, after aluminum. The metal has a silvery-white color, malleable, burns in pure oxygen, corrodes at high humidity, is soft and ductile in its pure form, various impurities increase hardness and brittleness.

Its average creativity is 4 points out of 10 on the Mohs scale. Has magnetic properties. Found in iron-nickel meteorites. Scientists believe that the earth's core is mostly composed of iron.

Given its properties, iron is used in the manufacture of magnets, both small in size (in household appliances) and for large-scale industries. The strength of the material is used for casting weapons and armor. Common alloys are cast iron and steel.

The density of iron depends on its chemical composition. For example, the presence of silicon and carbon in the alloy lowers its properties. While cast iron has the opposite effect and increases density.

Now let's return to the topic of our article and determine which of the materials described above is the heaviest? We have not in vain considered the density of gold, silver, lead and iron. It is this factor that affects weight. It can be concluded that if several identical pieces of the above-mentioned metals are placed, they will turn out to be different in volume and size.

Summing up, it becomes clear that you do not need to immediately run to the scales and see which of the alloys is heavier. It is enough to look into the periodic table and know their density.

Which is heavier: gold or lead?

The question arises, how does the density of gold compare with the density of other metals? Which element has the largest mass? These and many other questions can be answered in this article.

Use of gold

Pharmacology also cannot do without the use of this amazing yellow metal. Gold compounds are now actively used in various medical preparations that save from a wide variety of diseases.

The density of this metal is slightly less than that of lead. It is equal to 10.5 grams per cubic centimeter. This suggests that gold is almost twice as heavy as silver.

In addition to the creation of silverware and various jewelry, this material is very actively used in industry, as well as in the photographic industry.

Silver nitrate used in medicine.

Unlike gold, iron has several oxidation states, and it interacts very actively with the environment. In terms of iron ore reserves, Russia occupies a leading position in the world.

Surprising is the fact that platinum, for a certain period of time, was considered a waste from gold mining, which was immediately thrown away.

The heaviest elements

Only this is not a chapel of density. True, this element was created artificially in 1984. They called it Hassium, its density is almost twice that of osmium.

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Both silver and gold have been known to mankind since ancient times. These metals were valued, they were credited with healing and magical properties. Not all people could wear jewelry made from these precious metals, but only those whose status allowed it.

These metals were revered differently in different countries, but their role in cultural traditions was similar. In ancient Babylon, in Assyria, silver was revered as a sacred symbol of the moon.

Gold was considered in the Middle East and in ancient Egypt as a symbol of the Sun or Dawn. He was worshiped and wars were waged for his possession.

Both noble metals were used for minting coins, for creating jewelry and utensils. In today's world, gold and silver jewelry is still valuable. They are liked by both women and men. And often the question arises of whether the close contact of these metals with the human body brings benefit or harm.

The benefits and harms of silver

Silver in microscopic quantities is everywhere; it is a constant component of all living things, including humans. It has antimicrobial properties, a colloidal solution of silver kills staphylococcus aureus and E. coli. It was customary to give a silver spoon to a baby for baptism, silverware was considered good for health. It has long been noticed that if you put a silver coin in a vessel with water, then the water does not turn sour and does not turn green.

It is believed that silver has a calming effect on the nervous system, it gives calmness and normalizes blood pressure.

But we should not forget that silver is a heavy metal that can poison the body, accumulating in it. Working in silver mines is hazardous to health.

The benefits and harms of gold

Gold, like silver, is found in all living organisms. True, it is almost impossible to detect it. Gold preparations are used in official medicine in the treatment of certain autoimmune diseases.

It is believed that gold strengthens the body, gives it new energy and improves immunity. It is useful for people with liver diseases, as well as those prone to sadness, melancholy and depressive states.

Gold is an inert metal, but some of its compounds are toxic and can accumulate in the liver and kidneys.

Edited by Nady1982 (01/05/2016 21:12)

Is it possible to wear jewelry made of silver and gold all the time?

Millions of people on the planet wear, without taking off, gold and silver chains with crosses or lucky earrings presented by their grandmother. Wedding rings on the hands wear out from constant wear, and among representatives of some tribes, rings are worn in the ears or in the nose in general forever.

However, there are cases when people are found to be hypersensitive to silver or gold. In rare cases, there is a headache and palpitations, where the metal touched the skin, redness appears. This is an individual intolerance to the metal.

How to determine which metal is right for you?

Choosing your metal is easy - you have to like it. It is pleasant to touch it, it is pleasant to see a bracelet on your wrist or a ring on your finger. Go to a jewelry store and browse the collections of rings and earrings. The sparkle of metals and stones is fascinating, but it is quite possible that you cannot take your eyes off silver jewelry, and gold does not cause much emotion. Or vice versa.

Most people wear both silver and gold, skillfully matching jewelry to outfits, creating their own unique image.

At different periods of life, there is a desire to wear only one of the metals, for example, in youth, elegant silver rings are liked, and in adulthood, massive gold attracts more. Modern large jewelry stores that have their own online catalogs, gold.ua, for example, help to choose jewelry. It is on the pages of the site that you can pick up a set of ring-earrings, or order a bracelet that you have long dreamed of.

Do not deny yourself jewelry, beauty gives a lot of positive emotions and a joyful mood will bring much more benefits than lengthy discussions about which metal is more useful. Both silver and gold are useful if it gives you joy.

The heaviest metals in the world

Humanity began to actively use metals as early as 3000-4000 BC. Then people got acquainted with the most common of them, this is gold. silver. copper. These metals were very easy to find on the surface of the earth. A little later, they learned chemistry and began to isolate from them such species as tin, lead and iron. In the Middle Ages, very toxic types of metals gained popularity. Arsenic was in use. which poisoned more than half of the royal court in France. So is mercury. which helped to cure various diseases of those times, ranging from tonsillitis to the plague. Already before the twentieth century, more than 60 metals were known, and at the beginning of the XXI century - 90. Progress does not stand still and leads humanity forward. But the question arises, which metal is heavy and surpasses all others in weight? And in general, what are these heaviest metals in the world?

Many mistakenly think that gold and lead are the heaviest metals. Why exactly did it happen? Many of us grew up with old movies and saw how the main character uses a lead plate to protect himself from vicious bullets. In addition, lead plates are still used today in some types of body armor. And at the word gold, many people have a picture with heavy ingots of this metal. But to think that they are the heaviest is wrong!

To determine the heaviest metal, its density must be taken into account, because the greater the density of a substance, the heavier it is.

TOP 10 heaviest metals in the world

Osmium (22.62 g / cm 3),
Iridium (22.53 g / cm 3),
Platinum (21.44 g / cm 3),
Rhenium (21.01 g / cm 3),
Neptunium (20.48 g / cm 3),
Plutonium (19.85 g / cm 3),
Gold (19.85 g/cm3)
Tungsten (19.21 g / cm 3),
Uranium (18.92 g / cm 3),
Tantalum (16.64 g/cm3).

And where is the lead? And it is located much lower in this list, in the middle of the second ten.

Osmium and iridium are the heaviest metals in the world

Consider the main heavyweights who share 1st and 2nd places. Let's start with iridium and at the same time say thanks to the English scientist Smithson Tennat, who in 1803 obtained this chemical element from platinum, where it was present along with osmium as an impurity. Iridium from ancient Greek can be translated as "rainbow". The metal has a white color with a silver tint and can be called not only heavy, but also the most durable. There is very little of it on our planet and only up to 10,000 kg of it is mined per year. It is known that most deposits of iridium can be found at the sites of meteorite impacts. Some scientists come to the conclusion that this metal was previously widespread on our planet, however, due to its weight, it constantly squeezed itself closer to the center of the Earth. Iridium is now widely in demand in industry and is used to generate electrical energy. Paleontologists also like to use it, and with the help of iridium they determine the age of many finds. In addition, this metal can be used to coat some surfaces. But it's difficult to do so.

Next, consider osmium. It is the heaviest in Mendeleev's periodic table. well, respectively, and the heaviest metal in the world. Osmium is tin-white with a blue tint and was also discovered by Smithson Tennat at the same time as iridium. Osmium is almost impossible to process and is mainly found at the sites of meteorite impacts. It smells unpleasant, the smell is similar to a mixture of chlorine and garlic. And from ancient Greek it is translated as "smell". The metal is quite refractory and is used in light bulbs and other appliances with refractory metals. For just one gram of this element, you have to pay more than 10,000 dollars, from which it is clear that the metal is very rare.

Like it or not, the heaviest metals are very rare and therefore they are expensive. And we must remember for the future that neither gold nor lead are the heaviest metals in the world! Iridium and osmium are the winners in weight!

How to identify titanium and distinguish it from other metals? Brass or steel which is heavier

How to identify titanium and distinguish stainless steel, aluminum and steel from titanium?

Identification of certain metals is an accurate and simple process only with special laboratory equipment, a spectrometer in particular. At home, the task is much more complicated. It is especially difficult to distinguish materials that are similar in color and magnetic properties. However, even in this situation, there are proven ways to distinguish titanium from other metals. Of greatest interest for comparison are aluminum and steel, including stainless steel. Here, even experienced craftsmen who regularly work with metals and accept titanium scrap are not always able to clearly identify what they have in their hands.

How to distinguish titanium from steel, aluminum

The first pair is non-ferrous and ferrous metals. Most steels are magnetic. The exception is alloyed metals of the austenitic class. A striking example is stainless steel with a high nickel content. This steel grade, like titanium, is a paramagnet. Therefore, the standard option using a magnet is unacceptable here.

see articles:

There are three reliable ways to determine titanium at home:

mathematical;
graphic;
abrasive;
galvanic.

pure mathematics

In this approach, metals are identified by weight. The disadvantage of the method is when only one type of metal is available. To determine in your hands that it will no longer work harder, you have to resort to mathematical calculations. This is facilitated by significant differences in the density of metals:

titanium - 4.5;
iron, 7.8;
aluminum and duralumin - 2.7.

Parameter values are given in g/cc. It remains to be added that the density of steel depends on the specific grade of metal. However, in absolute terms, these differences are insignificant. Therefore, the density of steel can be safely taken as the value of a similar characteristic for iron.

It remains only to clarify the volume and weight of the part or piece of metal. Further, simple calculations will show whether it is aluminum, steel or the desired metal - titanium. How to determine the volume of a part of a complex shape? Here the best option is the law of Archimedes. The mass of the ejected liquid, when a metal structure is immersed, allows you to set its volume. The situation is simplified by the density of water, equivalent to 1 kg / cubic dm. Accordingly, each gram of the ejected liquid is equal to one cubic centimeter of volume.

Of course, this is a dreary, complicated and inaccurate way, but in order to determine titanium at home, it has a place to be.

Drawings on glass

This is the most accessible method of how to distinguish titanium at home, but they need to be mastered and experienced with titanium. The metal leaves characteristic indelible marks on glass and tiles. It is enough to hold the pointed edge of the metal along one of the indicated materials. Those are marks, not scratches. The windows of public transport are often painted in a similar way. You can wash the titanium graphics on the tile with a solution of hydrofluoric acid, contact with it should be extremely careful.

This method is simple and efficient. Titanium, contrary to popular belief, leaves a mark even on contaminated glass. So it is not necessary to degrease its surface. On the contrary, any grade of steel and aluminum can only barely scratch the glass. This is an excellent method to identify titanium.

abrasive wheel

An ideal way to distinguish titanium from stainless steel for grinder owners (which, in fact, is not necessary at all). However, almost any abrasive surface will do, even asphalt. The contact of titanium with an abrasive is accompanied by a scattering of sparks of a rich white color. The interaction of steel with an abrasive surface is characterized by a yellow or red tint. Sparks are much less.

Stainless steel grades are fireproof. Processing of certain grades of stainless steel occurs without sparks at all. This property is used in fire hazardous industries. Only stainless steel tools are allowed there. A similar technique is used in the question of how to distinguish titanium from aluminum. The grinding of the latter on the abrasive wheel also occurs practically without sparks.

This method of determining titanium can be called the most effective - the color of the spark will indeed be different from other metals. In general, the spark test is one of the most popular and correct for identifying and recognizing different metals.

Video - how to distinguish titanium from magnesium and aluminum:

Galvanic approach

Another sure way to recognize titanium is available right in the garage. The technique is based on coloring this metal by anodizing. The simplest design of the "laboratory installation" is a car battery, the plus of which is connected to a titanium plate. A metal rod wrapped with cotton wool soaked in Coca-Cola is connected to the minus of the DC source. The ideal option is any saline solution.

If you run cotton wool over titanium, the metal will be colored within a few seconds. The color obtained during the formation of an oxide film depends on the applied voltage and surface treatment time. However, if the task is how to determine titanium from stainless steel, then the color tone is not important. The main criterion is color change.

Video - how to distinguish titanium from steel in this way:

Other techniques

There are a number of alternative ways to determine titanium in the hands or aluminum, for example. One option is thin shavings. In the case of titanium, it is highly flammable and burns brightly. On the contrary, aluminum shavings melt. When "metal filings" of duralumin are placed in an alkaline solution, an active evolution of hydrogen is observed.

The next way to distinguish titanium metal from steel and aluminum is thermal conductivity. The numerical values of the parameter W/(m K) for the indicated metals are:

titanium - 14;
low-carbon steel - 55;
stainless steel - 16;
aluminum - 250.

Titanium products are warmer in the hands. Of course, the approach is not characterized by high accuracy, and it is generally unsuitable for distinguishing titanium from stainless steel.

Summary

As you can see, even at home, it is quite possible to distinguish titanium from aluminum and steel. The most practical options are spark and glass. For the first case, any abrasive surface is sufficient, even asphalt or hardened concrete. The bright spark of titanium is successfully used by bikers, installing horseshoes made of this metal on their shoes. A trace on the glass is beneficial in that the metal is not damaged. A relative disadvantage is that some titanium alloys do not leave a pattern. But for pure metal, this is the best option.

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The heaviest metals in the world top 10 list

Humanity began to actively use metals as early as 3000-4000 BC. Then people got acquainted with the most common of them, these are gold, silver, copper. These metals were very easy to find on the surface of the earth. A little later, they learned chemistry and began to isolate from them such species as tin, lead and iron. In the Middle Ages, very toxic types of metals gained popularity. Arsenic was in use, with which more than half of the royal court in France was poisoned. So is mercury, which helped to cure various diseases of those times, from tonsillitis to the plague. Already before the twentieth century, more than 60 metals were known, and at the beginning of the XXI century - 90. Progress does not stand still and leads humanity forward. But the question arises, which metal is heavy and surpasses all others in weight? And in general, what are these heaviest metals in the world?

To determine the heaviest metal, its density must be taken into account, because the greater the density of a substance, the heavier it is.

TOP 10 heaviest metals in the world

Osmium (22.62 g/cm3),
Iridium (22.53 g/cm3),
Platinum (21.44 g/cm3),
Rhenium (21.01 g/cm3),
Neptunium (20.48 g/cm3),
Plutonium (19.85 g/cm3),
Gold (19.85 g/cm3)
Tungsten (19.21 g/cm3),
Uranium (18.92 g/cm3),
Tantalum (16.64 g/cm3).

And where is the lead? And it is located much lower in this list, in the middle of the second ten.

Osmium and iridium are the heaviest metals in the world

Next, consider osmium. It is the heaviest in Mendeleev's periodic table, and, accordingly, the heaviest metal in the world. Osmium is tin-white with a blue tint and was also discovered by Smithson Tennat at the same time as iridium. Osmium is almost impossible to process and is mainly found at the sites of meteorite impacts. It smells unpleasant, the smell is similar to a mixture of chlorine and garlic. And from ancient Greek it is translated as "smell". The metal is quite refractory and is used in light bulbs and other appliances with refractory metals. For just one gram of this element, you have to pay more than 10,000 dollars, from which it is clear that the metal is very rare.

Osmium

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How to distinguish bronze from brass at home?

There are a number of ways that will tell you how to distinguish bronze from brass. In the presented material, I would like to consider the simplest and most affordable solutions for the implementation of this task. Let's find out how to distinguish bronze from brass at home.

What is bronze?

Before we figure out how to distinguish bronze from brass, let's find out what each of the alloys is. Let's start with bronze. So, bronze is an alloy of tin and copper, with impurities of silicon, aluminum, beryllium and lead. It is the quality of the tin used that largely determines the nature of the future alloy.

There is a special kind of bronze, in the manufacture of which tin is replaced with nickel or zinc. Such an alloy is known as spiatr. In fact, the material is a cheap version of bronze, which is not of the best quality.

According to the above manufacturing principles, bronze is divided into tin and tinless. At the beginning of the last century, metallurgists produced arsenic bronze. However, due to its high toxicity, the material has not been widely used.

What is brass?

Brass is practically the same alloy as bronze. But instead of the alloying composition in the form of tin, zinc is used here in combination with copper. Sometimes lead, iron, nickel, manganese, and other elements are added to the alloy.

Even the ancient Romans knew how to get brass. It was they who first learned to combine molten copper with zinc ore. Pure zinc in order to make brass began to be used only at the end of the 18th century in Britain. The British often used the alloy to create fake gold, because brass, like a noble metal, has an attractive sunny sheen.

Today, the material is widely used to create the so-called bimetal - an alloy where steel is combined with brass. This solution contributes to the production of a metal that is resistant to corrosion as well as abrasion. At the same time, bimetal products have good ductility.

Defining Differences Between Bronze and Brass

How to distinguish bronze from brass? The difference between the presented alloys is as follows:

Brass is obtained by combining zinc with copper. In turn, bronze is produced by alloying copper with tin.
Bronze can be in contact with sea, salt water for a long time without destroying the structure of the material. For brass, this requires additional processing in the form of alloying.
Bronze has increased resistance to mechanical wear and is a durable material. For this reason, the alloy is widely used to create all kinds of sculptures and monuments. Brass is not suitable for these purposes, although it is used as elements of art products.
How to distinguish copper from brass and bronze? Copper has a reddish tint. At the same time, bronze has a dark brown color, as well as a coarse-grained structure. Brass, on the other hand, has a yellow tint and is a fine-grained material.

Differences between bronze and brass according to weight

How to distinguish bronze from brass based on the weight of the materials? It is worth noting that bronze is a fairly heavy alloy. In equal volumes of blanks, bronze will be clearly heavier than brass. Therefore, it is possible to distinguish products from individual alloys by weighing them on the palms.

How to distinguish alloys by heating?

It is necessary to try to distinguish materials by the method of thermal influence. However, the results in this case will be more reliable. What do we have to do? It is necessary to heat both alloys with a gas burner to a temperature of more than 600 ° C. With such an impact on the surface of the brass product, an ashen-colored coating is formed, which is zinc oxide. At the same time, bronze will remain in its original form.

After heating, brass will become more ductile. Bronze does not change its physical properties under the influence of high temperature. If you try to bend a brass billet, the structure of the latter will not be damaged. As for bronze, it will definitely break at the point of inflection.

How to distinguish brass from bronze with a magnet?

As noted above, bronze contains tin and lead. These materials can be attracted by a magnet. The only thing required for the experiment is finding a fairly strong magnet. When using it, the bronze will slightly stick to the surface. The magnet will not have any effect on brass.

Finally

As you can see, there are a number of ways that allow you to distinguish bronze from brass at home. In most cases, there are pronounced visual differences between products from these alloys. Therefore, to cope with the task, sometimes it is enough just to carefully consider both materials.

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AKBS: steel or brass?

Xpert 29-03-2010 03:41

Dear colleagues!

In connection with the official statement of the ACBS about the launch of cartridges 9 R.A. in a brass sleeve, so beloved by veterans, who sometimes affectionately call them "butter", I, having prepared a jar of adrenaline and a purse with the necessary papers, began to wait for them to appear on sale.

I hasten to inform you in advance that as of the beginning of September 2009, I brought my pistol 1014 series 015xxx to the state of "consumption" of any cartridges. As it seemed to me.

Then I met a certain "good fairy" who, as it turned out, was able to help with various options for what you can equip the gun with.

Moreover, a miraculous opportunity was discovered to add factory cartridges, which, to put it mildly, do not suffer from quality in this part. Moreover, the quality of factory rolling is almost the same for all manufacturers. Disgusting.

On one of the “fairy” arrivals, for a change, I decided to purchase 10 cartridges of 50 J (I enclose the label) oriented to private security companies.

For reference, at present shooting Streamer 1014 - 2700, approximately 50% AKBS 50J, 45% AKBS Magnum, everything else is garbage, including KSPZ 80+ and TK 70. The gun was immediately completely transferred to the "Forum".

Well, continuing my story (with pictures, I promise, I loaded 14 rounds into the magazine, but the last 4 were alternated Magnum-Brass50-Magnum-Brass50.

What I got almost killed me. See for yourself.

Cases from cartridges with brass cases have changed their geometry so much that I had doubts about the appropriateness of their use, although shooting and extraction are without problems. Even the "snuffy" KSPZ with a bimetallic sleeve did not allow themselves such a thing.

Photos are attached, as well as photos of cartridge packages.

I ask specialists and veterans of the Hanseatic League to evaluate the quality of either the cartridges, or my "friend", who withstood more than 2500 shots.

Sincerely, X-pert

guns.allzip.org

Metals and alloys used in the manufacture of art products - Kustar

In the process of manufacturing products by artistic metal processing, both precious and non-precious metals and their alloys are used. Precious include gold, silver, platinum and platinum group metals: palladium, ruthenium, iridium, osmium, and non-precious - ferrous metals - steel, cast iron - and non-ferrous metals - copper, brass, bronze, aluminum, magnesium, cupronickel, nickel silver, nickel, zinc, lead, tin, titanium, tantalum, niobium. Cadmium, mercury, antimony, bismuth, arsenic, cobalt, chromium, tungsten, molybdenum, manganese, vanadium are also used in the form of small additives to change the properties of alloys or as coatings.

Aluminum. This soft, silvery white metal is easily rolled, drawn and cut. Silicon, copper, magnesium, zinc, nickel, manganese, chromium are added to aluminum alloys to increase strength. Aluminum alloys are used to produce cast architectural details and sculptures, as well as jewelry.

Bronze. It is an alloy of copper with zinc, tin, lead. Tinless bronzes are also produced. In the history of mankind, a whole era is called the Bronze Age, when people, having learned how to smelt bronze, made household items, weapons, banknotes (coins), and jewelry from it. Currently, monuments, monumental sculptures, as well as interior decoration of theaters, museums, palaces, underground lobbies of the metro station are made of bronze.

Gold. From ancient times to the present day, gold has been the most common metal for making jewelry, tableware and interior decoration. It is widely used for gilding ferrous and non-ferrous metals, as well as for the preparation of solders. Gold in its purest form is a beautiful yellow metal. Gold alloys can be white, red, green, and also painted black. Gold is a very viscous, ductile and malleable metal. Gold alloys are well cut, ground and polished. Gold does not oxidize. It dissolves only in selenic acid and aqua regia - a mixture of concentrated acids: one part nitric and three parts hydrochloric.

Iridium. This metal looks like tin, but differs from it in high hardness and brittleness. Iridium polishes well, but is difficult to machine. It is not affected by alkalis, acids, or mixtures thereof. Iridium is used in jewelry.

Brass. This is an alloy of copper and zinc, used for the manufacture of tableware and interior decoration (chasing), as well as various jewelry, often silver-plated or gilded. Brass is successfully processed by cutting, easily soldered, rolled, stamped, minted, nickel-plated, silver-plated, gilded, oxidized", compared to pure copper, they are stronger and harder, much cheaper and more elegant in color. Brass with a low zinc content (from 3 to 20%), called tombac, has a reddish-yellow color.

Magnesium. This metal is four times lighter than bronze. Alloys consisting of magnesium, aluminum, manganese, zinc, as well as copper and cadmium, have recently been used to manufacture interior decoration items for industrial facilities.

Copper. It is a soft, exceptionally ductile and viscous metal, easily amenable to pressure processing: drawing, rolling, stamping, embossing. Copper is well ground and polished, but quickly loses its luster; it is difficult to sharpen, drill, mill. Pure or red copper is used for the manufacture of jewelry filigree and interior decoration items - coinage. Copper is used for the preparation of solders (copper, silver, gold), as well as an additive in various alloys.

Nickel. White, highly lustrous metal, chemically resistant, refractory, durable and ductile; does not occur in its pure form in the earth's crust. Nickel is mainly used for decorative and protective coating of table setting items and jewelry, and nickel-based alloys (cupronickel and nickel silver), which have sufficient corrosion resistance, strength, ductility and the ability to be easily rolled, minted, stamped and polished, are used to make items table setting and interior decoration, as well as jewelry.

Niobium. Very similar to tantalum. Resistant to acids: it is not affected by aqua regia, hydrochloric, sulfuric, nitric, phosphoric, perchloric acids. Niobium is soluble only in hydrofluoric acid and its mixture with nitric acid. Recently, it has been used abroad for the manufacture of jewelry.

Tin. In ancient times, coins were minted from tin and vessels were made. This soft and ductile metal is darker in color than silver, and surpasses lead in hardness. In jewelry, it is used in the preparation of solders and as a component of non-ferrous metal alloys, and more recently, in addition, for the manufacture of jewelry and interior decoration items.

Osmium. It is a shiny, bluish-gray metal, very hard and heavy. Osmium does not dissolve in acids and their mixtures. It is used in alloys with platinum.

Palladium. This viscous ductile metal can be easily forged and rolled. The color of palladium is darker than silver, but lighter than platinum. It dissolves in nitric acid and aqua regia. Palladium is used to make jewelry, and is also used as an additive in alloys with gold, silver, and platinum.

Platinum. Platinum is used for making jewelry and as a decorative coating. Plasticity, strength, wear resistance, play of color - these are the properties of platinum that attract jewelers so much. Platinum is a shiny, white metal, very malleable, dissolves with great difficulty even in boiling aqua regia - a mixture of three parts of nitric and five parts of hydrochloric acid. In nature, platinum occurs with an admixture of palladium, ruthenium, rhodium, iridium, and osmium.

Rhodium. Hard enough, but brittle metal, reminiscent of aluminum in color. Rhodium does not dissolve in acids and their mixtures. Rhodium is used for decorative coating of jewelry.

Ruthenium. A metal that outwardly almost does not differ from platinum, but is more fragile and harder. It is used in an alloy with platinum.

Lead. Very soft and ductile metal, easily rolled, stamped, pressed, cast well. Lead has been known since ancient times and was widely used for making sculptures and decorative details of architecture. In jewelry, lead is used to make solders and as a component in alloys.

Silver. This metal is very widely used for the manufacture of tableware and interior decoration items, various jewelry, and is also used for the preparation of solders, as a decorative coating and ligature in gold, platinum and palladium alloys. Silver has high ductility and ductility, it is well cut, polished, rolled. It is harder than gold, but softer than copper, it dissolves only in nitric and hot sulfuric acids.

Steel. Steel is obtained by remelting pig iron. In the production of art products, stainless steel and blued steel are used - dark in color (specially processed). Stainless steel is used to make tableware and interior decorations, and more recently, jewelry, and blued steel is used to make jewelry. To give stainless steel products a more elegant look, they are gilded or silvered.

Tantalum. A gray metal with a slightly lead tint, second only to tungsten in terms of refractoriness. It is characterized by plasticity, strength, good weldability, corrosion resistance. Jewelry firms in Western countries use tantalum for the manufacture of certain types of jewelry.

Titanium. This is a shiny, silver-colored metal, easily amenable to various types of processing: it can be drilled, sharpened, milled, ground, soldered, glued. In terms of corrosion resistance, titanium is comparable to precious metals. It has high strength, low density, and is quite light. Recently, a wide range of a wide variety of jewelry has been made from titanium in foreign countries.

Zinc. It is a grayish-white metal with a bluish tinge. The first art products made of zinc - decorative sculptures, bas-reliefs - appeared in the 18th century. At the end of the 19th century, candlesticks, table sconces, candelabra, and decorative sculptures were made from zinc using artistic casting, which were often tinted to look like bronze or gilded. In jewelry, zinc is used for the preparation of solders, and also as one of the components in various alloys.

Cast iron. There are the following types of cast iron: foundry (grey), conversion (white) and special. For the manufacture of artistic products, only foundry or gray cast iron is used. Gray cast iron is the main material for artistic casting. Vases and small sculptures, caskets and caskets, ashtrays and candlesticks, landscape gardening items and many other products are cast from it.

www.sdelaysam.info

Brass or steel in domestic plumbing

When choosing shut-off valves for pipelines, or even if you buy an ordinary mixer at home, sooner or later the question may arise about the material of these products: "But what is still better, brass or steel?" After all, over time (and water through pipes), due to the fact that in cold water and hot water systems the medium is generally not suitable for drinking, not so clean, lime deposits, burr are formed, or even electrochemical corrosion processes are possible that can significantly narrow the channel's remote control to connecting nodes, or even disable it.

It is known for certain that such corrosion can occur in the presence of several factors - the combination of two different metals with different electrochemical potentials, their contact and immersion in an electrically conductive medium, and since such a liquid is, it can be concluded that over time this contact can negatively affect the operation of the locking unit.

Steel is quite sensitive to water quality and tends to collect much more neoplasms and contaminants on the surface than brass, besides, brass does not darken and is absolutely not subject to corrosion, and according to authoritative information, it has a long service life - over a dozen years, with virtually no loss of its brilliance, which makes sense in household plumbing, you see. In the manufacture of brass parts, as well as in cases with stainless steel, nickel or chromium is often added to its composition to improve its characteristics. Steel still darkens over the years, plus, products made from it are somewhat more expensive. You may have noticed that stainless steel household faucets are becoming less and less common on sale, and there are a number of reasons for this, in addition to the already obvious ones mentioned above, when installing such, you need to take care of a special filter, in general, this is apparently quite troublesome and not cheap. In general, the ideal material for domestic water equipment is copper, which, in terms of its sanitary parameters, is the most suitable for this, but this should be discussed in a separate line.

aglant.ru

What is heavier gold or lead, iron, silver or platinum

The question arises, how does the density of gold compare with the density of other metals? Which element has the largest mass? These and many other questions can be answered in this article.

Use of gold

Pharmacology also cannot do without the use of this amazing yellow metal. Gold compounds are now actively used in various medical preparations that save from a wide variety of diseases.

The density of this metal is slightly less than that of lead. It is equal to 10.5 grams per cubic centimeter. This suggests that gold is almost twice as heavy as silver.

In addition to the creation of silverware and various jewelry, this material is very actively used in industry, as well as in the photographic industry.

Silver nitrate used in medicine.

Unlike gold, iron has several oxidation states, and it interacts very actively with the environment. In terms of iron ore reserves, Russia occupies a leading position in the world.

Platinum

Surprising is the fact that platinum, for a certain period of time, was considered a waste from gold mining, which was immediately thrown away.

The heaviest elements

Only this is not a chapel of density. True, this element was created artificially in 1984. They called it Hassium, its density is almost twice that of osmium.

An increased interest in the question of which is better - gold or silver, arises whenever a conversation comes about these precious and noble metals. It is almost impossible to come to an unambiguous conclusion. The fact is that each of them has a fairly large number of properties that speak of merits.

About Advantage Features

In a dispute over which is better gold or silver, a variety of indicators attract attention: beauty, prestige, magical features, healing properties, durability and strength of the metal. A lot of people don't care about the cost.

For some, it is important that gold jewelry is a sign of power, wealth, nobility, while others contrast this with the airiness, lightness, and elegance of silver. For the third, the durability and strength of the metal is important. Some argue how useful and harmful metals are for the body as a whole.

A lot of people don't care about the price difference. The issue of price is easy to understand. Gold is more expensive than any metal, it is much more expensive than silver. This is an axiom. But sometimes you can hear disputes about which is heavier. The answer is unambiguous - gold is heavier. Why gold? Because it is necessary to take into account the volume and density of metals, and for gold it is higher. A kilogram of gold will look almost twice as large as a kilogram of silver. It's all about the density of matter.

Some people never cease to worry about the question of whether gold and silver are magnetized. It should be noted that there are so few magnetic properties in them that they do not manifest themselves in any way.

Fashion is experiencing the greatest difficulties: what is better to wear from jewelry - the sunny warmth of gold or the gentle coolness of silver. In order not to make a mistake in choosing, it is advisable to familiarize yourself with the comparative characteristics of precious metals.

Looking closely at jewelry, you can focus on several indicators:

Who has to wear
For what purpose is it purchased.
Suitable for the intended owner.

For example, gold is more suitable for people who are self-confident and have already reached a mature age. The presence of gold jewelry often symbolizes the status of a person, it can speak of his vigor and success in business. Silver is in demand among people who are emotional and sensitive, who have a fine mental organization and intuition.

You can argue with the popular belief that gold accessories are more appropriate for older people.

After all, it is customary to exchange gold rings for young spouses. Gold jewelry is a wonderful gift for your loved ones.

Distinguished by a kind of modesty, silver is more suitable for a young girl with her lightness, airiness and naivety. But an excess of gold or silver jewelry will create an impression of pretentiousness and bad taste in all owners.

About healing and magical properties

These precious metals have excellent healing properties. Given their characteristics, gold is preferable for those who have impaired blood circulation, signs of vascular and cardiological pathologies are observed, there are problems with the functioning of the musculoskeletal system and the gastrointestinal tract.

It is generally accepted that wearing gold things can help prevent depression, improve memory, and increase intellectual abilities. The warmth of gold can relax and calm people of mature years, as well as children.

Gold, according to Eastern teachings, contains solar energy, which has a positive effect on the general condition of individuals who tend to succumb to despondency, suffer from low blood pressure and a feeling of fatigue. Thanks to gold jewelry, they receive the power of the Sun.

As for silver, first of all, its diagnostic feature should be noted - the ability to signal the onset of a disease by changing its appearance (darkens, dims). The fact of the antibacterial capabilities of the metal is undeniable, therefore, for a long time they have been used to purify water.

Despite the fact that silver can have a positive effect on the state of vision and heart activity, it is undesirable for people in old age to wear it because of its ability to radiate cold.

In rare cases, long-term wearing of gold and silver jewelry can provoke allergic skin reactions. They can be manifested by a violation of the heart rhythm, redness at the points of contact with the body, headache. In such situations, these products should be discarded.

When purchasing gold items, it is important to consider that it can bring bad luck if it was acquired by cunning, deceit. It does not like angry, stingy, lazy people and will not bring them success and prosperity. But it helps those who achieve everything with hard work. Helps pessimistic natures, provided that products from it are constantly close to the body.

Silver pendants, bracelets, rings are recommended to be worn by young women who want to have children or are already bearing them. Things made of silver attract good luck, prosperity, love. The ability of silver to feel the energy field of each person makes it possible to prevent the negative effects of the evil eye of slander and the effects of evil forces.

How to make a choice?

When choosing a fashion accessory, it is advisable to know who suits gold and who can wear silver jewelry. Oddly enough, men are not advised to wear gold, but there are no contraindications for women. The philistine point of view boils down to the fact that it is not worthwhile for the stronger sex to adorn itself, this is the prerogative of women. But if we take into account the point of view of representatives of alternative medicine, then there is reason to think. The danger lies in the fact that the oxidation process, which occurs due to the presence of impurities in gold, adversely affects blood counts. This can cause male infertility and impotence.

But is it really impossible for men to wear gold? Not at all. Good products in a worthy way will add weight and self-confidence to a man. But you should listen to the opinion of doctors. They recommend not wearing these things all the time. To believe in it or not is everyone's business.

It is easier for women - they have a thicker subcutaneous fat than men - this protects them from the negative effects of gold. Taking advantage, women wear whole sets made by skilled craftsmen. However, the fair sex should take into account some of the nuances when choosing jewelry made of gold and silver:

Gold is very suitable for women with a delicate skin tone. It can be owners of green or brown eyes.
Silver will decorate a representative with a healthy blush - a brunette.
Gold is not particularly selective about the signs of the zodiac. The only exception is for Cancer and Pisces, who prefer to choose an alloy of these metals.
Silver has no limits at all.
It is better for unmarried girls to choose jewelry made of silver.

All this, of course, is conditional. But it is characteristic that youth likes the elegance and lightness of silver, and maturity gravitates towards the quality factor of gold. At the same time, women forget about the rejuvenating properties of silver.

Gold and silver should not be worn at the same time. This will lead to disharmony not only aesthetic, but also physical. Over time, there may be sharp mood swings - from cheerful to dull, as well as a deterioration in the condition of the body as a whole.

A few words about the care of gold and silver jewelry

So that jewelry does not cease to please, it is advisable to clean it at least once every three months. This is easy to do at home.

Warm soapy water works well for cleaning gold. The product should be lowered into it for an hour (1 tablespoon of liquid soap in a glass of water). After that, you can clean hard-to-reach places with a soft brush, rinse with clean water and wipe with a soft cloth. The cleaning method is similar, but with the addition of baking soda. You can simply rub with hygienic lipstick, then carefully wipe with a flannel or a special cleaning cloth for gold.

More delicate care requires silver. Tarnished or darkened silver is easy to restore splendor. To do this, lower it for a few minutes in a soapy solution, and then rub it with toothpaste applied to a soft material. Perfectly cleans such jewelry polish for silver products.

You can clean silver with baking soda by mixing it with a little water. Rub the product with the resulting mixture for several minutes. The effect will exceed expectations - silver will shine with novelty.

It is very important when caring for gold and silver jewelry to avoid contact with hard objects and chemicals, including cosmetics.

Store preferably in boxes separately from each other and from other jewelry.

Timely cleaning and proper care is the key to maintaining the brilliance and grandeur of your favorite jewelry. In this form, they will please the eye for many years. To make the right choice, you should rely on your intuition, on the emotions that come from touching magnificent silver or gold items. The main thing is to experience the joy of owning bewitching jewelry, and not to torment yourself with questions about price and benefits.

Humanity began to actively use metals as early as 3000-4000 BC. Then people got acquainted with the most common of them, these are gold, silver, copper. These metals were very easy to find on the surface of the earth. A little later, they learned chemistry and began to isolate from them such species as tin, lead and iron. In the Middle Ages, very toxic types of metals gained popularity. Arsenic was in common use, with which more than half of the royal court in France was poisoned. It is the same, which helped to cure various diseases of those times, ranging from tonsillitis to the plague. Already before the twentieth century, more than 60 metals were known, and at the beginning of the XXI century - 90. Progress does not stand still and leads humanity forward. But the question arises, which metal is heavy and surpasses all others in weight? And in general, what are these heaviest metals in the world?

To determine the heaviest metal, its density must be taken into account, because the greater the density of a substance, the heavier it is.

TOP 10 heaviest metals in the world

Osmium (22.62 g / cm 3),
Iridium (22.53 g / cm 3),
Platinum (21.44 g / cm 3),
Rhenium (21.01 g / cm 3),
Neptunium (20.48 g / cm 3),
Plutonium (19.85 g / cm 3),
Gold (19.85 g/cm3)
Tungsten (19.21 g / cm 3),
Uranium (18.92 g / cm 3),
Tantalum (16.64 g/cm3).

And where is the lead? And it is located much lower in this list, in the middle of the second ten.

Osmium and iridium are the heaviest metals in the world

Next, consider osmium. It is the heaviest in the periodic table of Mendeleev, well, respectively, and the heaviest metal in the world. Osmium is tin-white with a blue tint and was also discovered by Smithson Tennat at the same time as iridium. Osmium is almost impossible to process and is mainly found at the sites of meteorite impacts. It smells unpleasant, the smell is similar to a mixture of chlorine and garlic. And from ancient Greek it is translated as "smell". The metal is quite refractory and is used in light bulbs and other appliances with refractory metals. For just one gram of this element, you have to pay more than 10,000 dollars, from which it is clear that the metal is very rare.