Unlike the physical properties, the chemical properties do
change a substance into a new one, with another composition, different from the original
one.
One of the properties of matter is reactivity. For
instance, when two substances are mixed together, there are happening some changes which
indicate that the substances are reacting. For instance, the rusting phenomenon occurs
when iron reacts with oxygen.
Another chemical property is
flammability. For instance, to change the wood into ash, you'll have to burn it. If wood
would not be flammable, this change could not be happening.
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