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15 March, 07:26

Concrete a mixture or pure substance?

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  1. 15 March, 07:45
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    Answer: Cement is a mixture.

    Explanation: It is composed of different types of compound particles. Each of the components of concrete by themselves would be pure substances. For example, a sample of just calcium oxide would be a pure substance because the particles in the sample would all be identical calcium oxide compounds.
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