Question

9. A chemical change involves:-
a:change of state only
b: change of state as well as composition
c: change of colour only
d: none of these e bange is.​

Answer 1

Answer:

option b is correct.

change of colour is optional so it can't be included in the generalised statement hence option b is correct

mark brainliest pls

Answer 2

Explanation:

chemical change involves:-

a:change of state only

b: change of state as well as composition

c: change of colour only

d: none of these e bange is.

Answer: c

Changes are of 2 types-physical and chemical. Physical changes are temporary changes which do not involve change in composition for example ice changing into water on heating. Chemical changes involve 2 or more substances combining together to form new substances and are permanent changes. Chemical change is responsible for production of new substances for example mixing of acid and base.