DalilaSoga DalilaSoga

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

Respuesta :

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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HELPPPPP!!!!! 32 points! Lila and Rob try to simplify 18 times 4 to the second power plus (9 minus 3) to the second power. Lila simplifies it and gets 324. Rob