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25 April, 13:20

Contrast a mixture and a pure substance. In your answer be sure to explain what each is, how you can tell them apart, and supply an example for each.

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  1. 25 April, 16:39
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    A pure substance has a definite and constant composition. A pure substance can be either an element or a compound, but the composition of a pure substance doesn’t vary. Ex: salt or sugar

    Mixtures are physical combinations of pure substances that have no definite or constant composition - the composition of a mixture varies according to who prepares the mixture. Ex: sand mixed with salt
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