Answer:
a. A color change
c. Precipitate being formed
e. A change in temperature
f. Bubbles being produced
Explanation:
Two types of changes occur namely: physical changes and chemical changes. A physical change does not affect the chemical composition of the substance involved. Physical changes include change of state etc.
However, on the other hand, a chemical change alters the chemical composition of the substances involved, hence, leading to the formation of new product(s). It is also called a chemical reaction. Since a new product is formed from the alteration of the chemical nature of the reacting substances, the following changes or indicators will be present or evident in a chemical reaction:
- color change of substance
- Precipitate being formed i.e. solid deposit
- A change in temperature
- Bubbles being produced (evolution of gas)
