In the following table, tick whether each of the substances listed is a mixture or a pure substance. If it is a mixture, also say whether it is a homogeneous or heterogeneous mixture.
Substance |
Mixture or pure |
Homogeneous or heterogeneous mixture |
fizzy colddrink |
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steel |
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oxygen |
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iron filings |
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smoke |
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limestone (\(\text{CaCO}_{3}\)) |