Chemistry
Grade-10
Easy
Question
Which is an example of a chemical reaction?
- Paper cut into small pieces
- Chocolate melting in a pan
- Flour and sugar mixed in a bowl
- Cookies baking in an oven
Hint:
The processes, in which a substance or substances undergo a chemical change to produce a new substance or substances, with entirely new properties are known as chemical reactions.
The correct answer is: Cookies baking in an oven
Cookies baking in an oven is a chemical reaction.
- When the materials are heated they undergo a chemical change.
- The reaction is non reversible.
- The sugar, flour, and eggs can no longer be separated. The properties of the materials have changed so it is a chemical change.
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