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21 June, 18:09

A 2.0-liter volume of hydrogen gas combined with 1.0 liter of oxygen gas to produce 2.0 liters of water vapor. Does oxygen undergo a chemical or physical change?

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  1. 21 June, 20:34
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    The answer to your question is Chemical change.

    Explanation:

    A Physical change is when matter changes its physical state, like evaporation, fusion, and solidification.

    A Chemical change is when matter combines to form new substances.

    In this problem, oxygen reacts with hydrogen to form a new substance (water) so oxygen undergoes a chemical change.
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