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10 February, 21:14

Are these mixtures or pure substance?

1. water

2. blood

3. the oceans

4. iron 5. brass

6. uranium

7. wine

8. leather

9. table salt (NaCl)

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Answers (1)
  1. 10 February, 22:31
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    A mixture is a system that is made up of two or more substances which are not combined chemically. A pure substance is a system that only has one substance. The following are classified as:

    1. water : pure substance

    2. blood : mixture

    3. the oceans : mixture

    4. iron : pure substance

    5. brass : mixture

    6. uranium : pure substance

    7. wine : mixture

    8. leather : mixture

    9. table salt (NaCl) : pure substance
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