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11 November, 08:58

All the following are signs of a chemical reaction, except

A. a change in color or odor.

B. a release of gas.

C. a change of state.

D. a change in energy.

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Answers (2)
  1. 11 November, 09:13
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    C. a change of state. It can be a physical or a chemical state of change.
  2. 11 November, 09:16
    0
    C. a change of state.

    Signs of a chemical reaction include;

    Change of color

    formation of gas

    change of temperature

    Precipitate formation

    Energy production.
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