We use Salt in our food( Nacl , Sodium chloride )

We use detergent for washing clothes .

We use chemicals for washing utensils .

By the use of chemical we polish our gold which make us look good.

Chemicals are used in farming as fertilizers and pesticides .

                              And much more
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Iron in nails 
aluminium in coke cans 
lithium in watch batteries 
gold in microprocessors 
copper in coinage 
zinc in galvanised steel 
oxygen in air 
nitrogen also in air 
hydrogen in water 
neon in signs 
uranium in power production 
sulphur in matches and food preservation 
chromium in brightwork on cars 
phopherous also in matches 
chlorine is used to clean swimming pools.