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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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Which substance can not be decomposed by a chemical change?

(1) ammonia (3) propanol
(2) copper (4) water

User Paras Gupta
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1 Answer

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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. 
User Whatsinthename
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