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11 July, 22:17

Mixtures can be separated by physical changes. true or false?

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  1. 12 July, 00:10
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    True. In mixtures, the elements or compounds are not chemically combined together, they still retain their own properties. We can make use of this and separate the constitution elements by simple physical methods.

    For example, in salt water, the water compund have a property that it can boil to vapor easily, but not for the salt, therefore we can use evaporation to separate salt from water.

    Some other physical methods may include distillation, crystallization, chromatography etc.
  2. 12 July, 00:42
    0
    The answer is True.

    Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds. Physical changes occur when objects or substances undergo a change that does not change their chemical composition.
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