Question

What are the different conditions for a chemical reaction to take place?

• A. Close contact
• B. Solution form
• C. Light
• D. Heat
• E. All of these

Answer 1

Answer: (E)

1. Close contact— For a chemical reaction to take place the reactants should be brought in close contact i.e. they should be mixed.

2. Solution form— Some substances react with each other only when they are mixed in the solution form.

3. Heat— Some reactants need to be heated to undergo a chemical change.

4. Light— Some reactions take place in the presence of light.