Metals are substances that are formed naturally below the surface of the Earth. Most of the metals are lustrous, i.e. they are shiny. Metals are made of substances that were never alive. 

They are natural compounds of the earth’s crust, which are generally found in the form of metal ores. They are associated with each other and also with other elements. Metals are present in the rocks that are washed up by surface water and groundwater. They also appear in atmospheric dust. They are strong, ductile, malleable and good conductors of heat and electricity. Metals are used in the manufacture of automobiles, satellites, and cooking utensils, among other things. The majority of metals are typically hard. Sodium and potassium are notable exceptions. Knives can be used to cut them. Most metals are solid except mercury which is a liquid metal at room temperature.


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Uses of Metals



Metals like steel and titanium account for about 80 percent of the total weight of the average vehicle. Same goes for trains, airplanes, ships, and other modern-day transports. The roads, bridges, and railways these vehicles run on are either reinforced or completely made of metals, too. 




Metals play a major role in construction of vertical structures as well. Depending on your home’s architecture, the roof trusses and the roof itself may be made of metals, too. All the equipment and tools used for construction, including power tools, hand tools, and excavators are all made mainly of metals.




If you peel off an electrical cable’s plastic jacket or insulator, you’ll be greeted by a metallic core. Metals are an ideal wire core material because they are electrically conductive. In fact, around 95 percent of an electrical system consist of highly conductive metals, mostly copper, to allow for maximum distribution of electricity.




The towers and dishes that feed signal into your electronic devices are all made of metals. Even if they only provide structural support, metals are safer and more reliable to use than other materials due to their natural toughness and high tensile strength.




The majority of jewelry items, if not all, have metallic components. Even bracelets or hair clips that are made mostly of stone or ceramic usually have metallic chains, cords, or clasps.




In the past, coins were made of gold or silver, but as the value of these metal increased, they were replaced by other less valuable metals, such as copper, nickel, and zinc. These metals are both lightweight and corrosion-resistant, so they are perfect for this application. During war times, however, coin manufacturers used steel because the usual metals were hard to come by.