Senin, 12 Maret 2012

Chemical and Physical change
PHYSICAL CHANGE
When we mould , inflate , melt etc. its appearance may change but no new materials are formed.
These are some examples of physical changes:
inflating a balloon
cutting a cloth
melting a butter
moulding a clay


CHEMICAL CHANGE
chemical change is a change where new materials are formed
here are the examples :

burning a wood
mixing foods
cooking a food



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