Metals, Examples of Metals, Types of Metals, Chemical Properties (For CBSE, ICSE, IAS, NET, NRA 2022)

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Physical Properties of Metals

  • All the metals are good conductors of heat and electricity. Cooking utensils and irons are made up of metals as they are good conductors of heat.
  • Ductility is the ability of the material to be stretched into a wire. This ability allows metals to be drawn into wires and coupled with their durability, find applications as cable wires and for soldering purposes. Because Metals can be drawn into wires, so metals are ductile.
  • Malleability is the property of substances which allows them to be beaten into flat sheets. Aluminium sheets are used in the manufacturing of Aircraft because of their lightweight and strength. Other metals sheets are used in automobile industries, for making utensils, etc. Therefore, metals are malleable.
  • Metals are sonorous because it produces a deep or ringing sound when struck with another hard object.
  • Usually, all the metals have a shiny appearance but these metals can also be polished to have a shiny appearance.

Chemical Properties of Metals

  • Reaction with water: Only highly reactive metals react with water and not all the metals. For example, Sodium reacts vigorously with water and oxygen and gives a large amount of heat in the process. This is why sodium is stored in kerosene so that it does not come in contact with moisture or oxygen.
  • Reaction with acids: Hydrogen gas is produced when metals react with acids. For example, when zinc reacts with hydrochloric acid it produces zinc chloride and hydrogen gas.
  • Reaction with bases: Not all the metals react with bases and when they do react, they produce metal salts and hydrogen gas. When zinc reacts with strong sodium hydroxide it gives sodium zincate and hydrogen gas.
  • Reaction with oxygen: Metal oxides are produced when metals burn in the presence of oxygen. These metal oxides are basic in nature. For example: When magnesium strip is burned in the presence of oxygen it forms magnesium oxide and when magnesium oxide dissolves in water it forms magnesium hydroxide.

Questions

What Are Metals?

Ans: A metal in chemistry is an element that creates positive ions (cations) readily and has metallic bonds. Metals are sometimes represented by a cloud of delocalized electrons as a lattice of positive ions.

What is Metal or Nonmetal?

Ans: A metal is a component, material, or alloy that is usually solid, transparent, shiny, and has good conductivity in terms of electrical and thermal. Metals are usually malevolent, which ensures that they can be indefinitely hammered or pressed without fracturing or cracking, as well as fusible or ductile

What is the Hardest Metal in the World?

Ans: Tungsten has any natural metal՚s highest tensile strength, but it is brittle and appears to break down on contact.

What is the Softest Metal?

Ans: Cesium is considered to be the softest metal, and Lead is considered one of the softest metals.

Mercury at room temperature is liquid (molten) . Gallium is liquid at body temperature, while solid (if soft) at room temperature.

What Happens if You Touch Calcium Metal?

Ans: Calcium will react with heat-causing water or moisture. When calcium metal contains moisture in the eyes, body, or respiratory tract, it can result in severe corrosive irritation.

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