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16 February, 15:49

Which of the following is an example of a chemical change? Dissolving sugar in coffee Evaporating rubbing alcohol Freezing water Rusting iron

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  1. 16 February, 17:31
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    The answer is Rusting iron
  2. 16 February, 18:59
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    Rusting iron is an example of a chemical change because iron reacts with air when moisture is present.

    examples of chemical changes are:

    • Molecules rearrange with other molecules to make new substance

    • Can be production of flames

    • Color change

    • Bubbling/fizzing

    • Temp. change

    Examples of physical changes are:

    • Melting

    • Boiling

    • Freezing

    • Condensing

    • Breaking

    • Bending

    • Dissolving
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