# Give One Example in the Case Where Supplying Energy (Given Below) is Necessary for a Chemical Reaction. Light Energy - Chemistry

Short Note

Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.

Light energy

#### Solution

Light Energy:

In presence of light – the molecules of the reactants absorb light energy and collide swiftly and react rapidly.

Example:

Photosynthesis in plants:
Plants manufacture food [glucose] from carbon dioxide and water – in the presence of chlorophyll [green pigment in plants] and sunlight.

$\ce{Carbon dioxide + water ⇌[chlorophyll][sunlight] glucose + oxygen}$

Concept: Chemical Equation
Is there an error in this question or solution?

#### APPEARS IN

Viraf J. Dalal Class 7 New Simplified Middle School Chemistry
Chapter 5 Language of Chemistry
Exercise | Q 9.2