11. Properties of metals
They also have a low
melting point. That is why
they are poor conductors
of heat & electricity.
EXCEPTIONAL
CASE : GRAPHITE
,which is good conductor
12.
13. Non-metals forms their oxides when react with oxygen.
When carbon is burnt in air, it forms carbon dioxide. You can
observe that when coal (carbon) is burnt it forms smoke,
which contains carbon dioxide.