short define on physical and chemical change
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Physical change -
changes which involve only a change in the physical properties like size, shape form and state of a material, but no new substance is formed are called Physical change.
Chemical Change-
the change which involve the formation of new substances are called chemical changes .
Physical change -
changes which involve only a change in the physical properties like size, shape form and state of a material, but no new substance is formed are called Physical change.
Chemical Change-
the change which involve the formation of new substances are called chemical changes .
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Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
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