Chemistry
Grade-10
Easy
Question
Which of the following is a chemical change rather than a physical change?
- Boiling water at 100 C
- Chopping up a piece of wood.
- Cooking a cake
- Ice carbon dioxide sublimating to gas
Hint:
Cooking of cake involves chemical reaction.
The correct answer is: Cooking a cake
- Boiling of water at 100
C is state change process which can be reverted.
- Chopping of wood doesn't change properties of a wood.
- Cooking a cake is chemical change all the ingredients undergo chemical reaction to form a new product.
- Ice carbon dioxide sublimating to gas is just a change of state.
C is state change process which can be reverted.Related Questions to study
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