Question

What is the difference between metals and non-metals?

Answer 1

Metals

Usually solid when in room temperature except mercury, which is liquid
Have a lustrous or shiny look
Are good conductors of heat and electricity
Have a high melting and boiling point.
Have a high density, are heavy for their size
Are malleable, i.e. can be hammered into sheets
Are ductile, i.e. can be drawn into wires
Are opaque as a thin sheet
Are sonorous, i.e. make a bell-like sound when struck

Non-Metals

Are not lustrous, have a dull appearance
Are poor conductors of heat and electricity
Are non-ductile solids
Are brittle solids
May be solids, liquids or gases at room temperature
Are transparent as a thin sheet
Are not sonorous, i.e. do not make a bell-like sound when struck

Hope this helps......

Answer 2

metals :
they are malleable
they are ductile
they are good conductor of heat and electricity they have generally 1 to 3 valance electrons
they are mostly solid
non metals:
they are non -conductors
they exist in solid liquid or gaseous state
they have 4 to 8 valance electrons
non metals are generally brittle