Question

State any three differences between the physical properties of metals and non-metals.

Answer 1

Sr. No.	Metals	Non-metals
1.	Metals are malleable and ductile. That is, metals can be hammered into thin sheets and drawn into thin wires.	Non-metals are brittle (break easily). They are neither malleable nor ductile.
2.	Metals are good conductors of heat and electricity.	Non-metals are bad conductors of heat and electricity (except graphite, which is a good conductor of electricity).
3.	Metals are lustrous (shiny) and can be polished.	Non-metals are non-lustrous (dull) and cannot be polished (except iodine, which is a lustrous non-metal).
4.	Metals are solids at room temperature (except mercury, which is a liquid metal).	Non-metals may be solid, liquid or gases at room temperature.
5.	Metals are strong and tough.	Non-metals are not strong or tough.