Question

Distinguish between:

Metals - Nonmetals (physical characteristics)

Answer 1

	Metals	Nonmetals
1.	Metals are generally solids at room temperature. Exception: Mercury is liquid at room temperature.	Nonmetals are generally gases or solids at room temperature. Exception: Bromine is in liquid state at room temperature.
2.	Metals are hard. Exceptions: Sodium, potassium.	Nonmetals are generally soft. Exception: Diamond
3.	Metals have high melting and boiling points. Exceptions: Sodium, potassium, mercury, gallium.	Nonmetals have low melting and boiling points.
4.	Metals have lustre.	Nonmetals have no lustre. Exception: Iodine
5.	Metals are good conductors of heat and electricity.	Nonmetals are bad conductors of heat and electricity. Exception: Graphite is good conductor of electricity.
6.	Most of the metals are sonorous i.e., they produce a sound when stuck on hard surface.	Nonmetals are not sonorous.
7.	Metals are malleable and ductile.	Nonmetals are not malleable and ductile.