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05-06-2015
Chemistry

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Which substance can not be decomposed by a chemical change?
(1) ammonia (3) propanol
(2) copper (4) water

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lulu1991 lulu1991

25-06-2015

The answer is (2) Copper. Because copper is consist of atom. If it is decomposed, the atom will be changed. While chemical change is just the break down and form of chemical bonds between atoms.

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