Question

3 physical changes in which energy is released

Answer 1

During phase changes, energy changes are usually involved. For example, when solid dry ice vaporizes (physical change), carbon dioxide molecules absorb energy. Meanwhile, when liquid water becomes ice energy is released. Remember that all chemical reactions involve a change in the bonds of the reactants

Answer 2

A physical change is any change in matter that involves the substance going from one physical state to another. ... Examples:-
1. Crushing a can.
2. Melting an ice cube.
3. Breaking a glass.

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