Chemistry

All the Elements can be divided into three groups.
(a) Metal , (b) Non-metal, (c) Metalloid
(a) Metals :
A metal is an element that is malleable and ductile, and conducts electricity. All the metals are solids except one metal mercury, which is a liquid.
Example. Iron, Copper, Aluminium, Zinc.
Properties of Metals
Metals are malleable : This means that metals can be beaten into thin sheets with a hammer (without breaking).
Example. Aluminium metal is quite malleable and can be converted into thin sheets called aluminium foils. Aluminium foils are used for packing food items like biscuits, chocolates, medicines, cigarettes, etc.
Metals are ductile : This means that metals can be drawn (or stretched) into thin wires. All the metals are not equally ductile. Some are more ductile than the other.
Example. Copper and aluminium metals are also very ductile and can be drawn into thin wires which are used in electrical wiring.
Metals are good conductors of heat and electricity : This means that metals allow heat and electricity to pass through them easily. Silver metal is the best conductor of heat. It has the highest thermal conductivity.
Example. The cooking utensils and water boilers, etc., are usually made of copper or aluminium metals because they are very good conductors of heat.
Example. The electric wires are made of copper and aluminium metals because they are very good conductors of electricity.