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21 June, 21:50

Which of the following is true of pure substances and mixtures? (Check all that apply.)

Pure substances are made up of mixtures.

Pure substances are separated by physical means.

Mixtures can be separated by physical means.

A pure substance is heterogeneous.

A mixture is made of one substance.

Mixtures are made up of more than one component.

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Answers (2)
  1. 21 June, 22:27
    0
    Mixtures can be separated my physical means is true

    mixtures are made up of more than one component is true

    all else is false I believe
  2. 22 June, 00:46
    0
    Mixtures can be separated by physical means.

    Mixtures are made up of more than one component.

    Explanation:

    Mixtures are made up of more than one component and can be easily separated by physical means.

    For example: A mixture of wheat and chaff can easily be separated by means of winnowing which is a physical method of separation. Air plays a very important role in separation. Chaff being lighter than wheat grain fall at a distance apart from wheat thus both of them get separated.
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