1. 321

6. Properties of
metals

7. Properties of
metals
Tensile strength:
Nonmetals are not hard
,so they break
easily.EXCEPTIONAL
CASE : DIAMOND is
the hardest substance.

8. Properties of metals
Nonmetals do
not have
luster; they
are dull.

9. Properties of
metals
Brittle
Nonmetals are brittle
so they break easily.
This means
nonmetals ARE NOT
ductile or
malleable.

10. Properties of metals
Nonmetals
have low
density,
they can
break
easily.

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

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.