Question

_______ is a chemical change.

(a) Evaporation
(b) Heating of copper and Sulphur
(c) Freezing of water
(d) Mixing of water with oil​

Answer 1

Explanation:

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.

Answer 2

Answer:

b heating of copper and sulphur

Explanation:

i think it will help you to come out from.your problem.budde