Question

4. A change occurs during the growth of plants. What type of change it is?

Answer 1

Part 1: Chemical change

The changes which involve a change in the chemical properties of a substance and as a result new substances are formed are called a chemical change.

Part 2: Growth of plant is a chemical change

• In plants, reaction like photosynthesis takes place which helps the plant to grow.
• It is the process by which green plants make their food by using Carbon dioxide $\left({\mathrm{CO}}_2\right)$ and water $\left({\mathrm{H}}_2\mathrm{O}\right)$ in the presence of sunlight and converting them into carbohydrates and oxygen $\left({\mathrm{O}}_2\right)$ gas.
• As new substances are formed, hence, growth of plants is a chemical change.