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Oksana_A [137]
2 years ago
12

Which of the following is an example of a physical change?

Chemistry
1 answer:
Pavel [41]2 years ago
3 0

Answer:

A. A solid dissolves.

Explanation:

The physical change from the given choices is that a solid dissolves.

The dissolution of a solute in a solvent is a physical change and not a chemical change.

A physical change has the following properties:

  • they are easily reversible
  • leads to the production of no new kinds of matter
  • involves no change in mass
  • requires little energy
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Explanation:

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The first process deals with a metabolic reaction in which energy is liberated:

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In the above process, energy is liberated when glucose combines with oxygen. The waste products are carbon dioxide and water. This process liberates heat energy which can be used to do work.

   In the reverse process:

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