Question

Mention two characteristics of a chemical change.

Answer 1

Explanation:

• It can not be reversed.
• It's colour change

Answer 2

The following can indicate that a chemical change has taken place, although this evidence is not conclusive: Change of odor. Change of color (for example, silver to reddish-brown when iron rusts). Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.