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5 November, 21:39

How are physical and chemical changes different

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Answers (2)
  1. 6 November, 00:51
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    Physical changes do not change the properties of the initial substance. Physical changes are temporary. For eg if you boil water, it turns into vapor. It's chemical composition is still H2O but now its just in gas form instead of liquid but overtime that gas will condensate into water. SO physical changes are reversible most of the times.

    Chemical changes change the properties of initial substance. Like burning wood, you can't really reverse this reaction because you can't go from coal to wood, its permanent change. So chemical changes are permanent changes. Like souring milk, acid-base reactions, rotting banana etc.
  2. 6 November, 01:35
    0
    physic

    Explanation:

    physical chnages are chnages to the appearance

    chemical chnages are chnages like

    color temperature chnaging fromna gas to a liquid etc
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