Question

A change involves energy. Explain giving an example.​

Answer 1

Answer:

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A change can be defined as an alteration in the physical and chemical properties of matter due to the effect of some kind of energy. E.g. cooking, digestion of food. ... means here energy is involved in changing the state of ice to liquid.

Answer 2

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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.

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