Metal

Metals are substances that occur naturally beneath the Earth’s surface. The majority of metals have a dazzling or shiny finish. Metals are inorganic, which means they are made up of non-living materials. Metals are natural components of the earth’s crust that are present in the form of metal ores and are related with each other as well as a variety of other elements. They’re also present in surface and groundwater-washed rocks, as well as in air dust.

Physical Properties of Metals

• All metals are excellent heat and electrical conductors. Metals are used to make cooking utensils and irons because they are good heat conductors
• Ductility refers to a substance’s ability to be stretched into a wire. Metals can be pulled into wires because of this ability, and their resilience allows them to be used as cable wires and soldering wires. Metals are said to be ductile because they can be pulled into wires
• The capacity of a substance to be pounded into flat sheets is known as malleability. Aluminium sheets are used in the production of aeroplanes because of their light weight and strength. Other metal sheets are utilised in the motor industry, as well as in the manufacture of utensils and other household items. Metals are malleable as a result
• Metals are sonorous because when struck with another hard object, they generate a loud or ringing sound
• All metals have a lustrous finish by default, but some metals can be polished to achieve a lustrous finish

Chemical Properties of Metals

• Reaction with water: Only highly reactive metals, not all metals, react with water. Sodium, for example, interacts vigorously with water and oxygen, producing a lot of heat in the process. This is why sodium is stored in kerosene, where it is protected from moisture and oxygen
• Reaction with acids: When metals react with acids, hydrogen gas is created. Zinc, for example, creates zinc chloride and hydrogen gas when it combines with hydrochloric acid
• Reaction with bases: Not all metals react with bases, and when they do, metal salts and hydrogen gas are produced. Zinc produces sodium zincate and hydrogen gas when it combines with strong sodium hydroxide
• Reaction with oxygen: When metals burn in the presence of oxygen, metal oxides are formed. In nature, these metal oxides are basic. When a magnesium strip is burned in the presence of oxygen, magnesium oxide is formed, and when magnesium oxide dissolves in water, magnesium hydroxide is formed

Metal Applications:

• Automobiles, buses, trucks, trains, ships, and aeroplanes are all modes of transportation
• Unmanned and manned rockets, as well as the space shuttle, are all examples of aerospace
• Conductors are required by computers and other electronic devices (TV, radio, stereo, calculators, security devices, etc)
• Satellite communications, for example, rely on a robust but light metal casing
• Microwave and traditional ovens, as well as refrigerators and freezers, are used for food processing and preservation
• Nails are used in traditional wooden construction, and structural steel is used in other structures
• As an artificial substitute for joints and other prosthesis in biomedical applications
• Boilers, turbines, generators, transformers, power lines, nuclear reactors, oil wells, and pipelines are all used in the production and delivery of electrical power
• Tractors, combines, planters, and other farm implements
• Ovens, dish and clothes washers, vacuum cleaners, blenders, pumps, lawn mowers and trimmers, pipes, water heaters, heating/cooling, and other household amenities

Conclusion

Metals conduct heat and electricity well, whereas non-metals do not. The only metal that does not conduct electricity is mercury, while the only nonmetal that does is graphite. Metals have 1, 2 or 3 valence electrons, whereas non metals have more than 3.