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30 July, 12:52

Which of the following changes are chemical changes?

a. Water is frozen.

b. Water is heated up.

c. Gasoline is burned.

d. Gasoline is evaporated.

e. Water is boiled.

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Answers (2)
  1. 30 July, 13:35
    0
    Answer: Option (c) is the correct answer.

    Explanation:

    A change that does not bring any difference in chemical composition of a substance are known as physical properties.

    For example, shape, size, mass, volume, density, etc of a substance are all physical change.

    And, a change in which there occurs a difference in chemical composition of a substance then it is known as chemical change.

    For example, precipitation, reactivity, toxicity etc are chemical change.

    When gasoline is burned then it is a chemical change.

    Thus, we can conclude that out of the given options gasoline is burned change is a chemical change.
  2. 30 July, 16:09
    0
    Gasoline is burning

    Explanation:

    examples of chemical changes are burning, cooking, rusting and rotting
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