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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.

In physical changes, energy is used to change the state of matter. In chemical changes, energy is released when there is decomposition of a substance and absorbed while forming a new substance.

What is physical changes and chemical change?

  • In a physical change, the material involved in the change is structurally the same before and after the change. Types of some physical changes are texture, shape, temperature, and a change in the state of matter.
  • Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.

Physical changes are reversible and do not produce a new substance. Chemical changes result in the production of a new substance and cannot be reversed.

To learn more about physical changes and chemical change:https://brainly.com/question/19046658

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