ICSE Class 7 Chemistry
Question 10 of 13
Physical and Chemical Changes — Question 12
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Question Question 12
Explain in brief the involvement of energy in - physical & chemical changes.
Physical changes use energy to change the state of matter.
Chemical changes release or absorb energy when changing a substance into a new substance.
- Energy is released during decomposition of a substance, while
- Energy is absorbed during formation of a new substance.