Why is a building concrete a pure substances or mixture
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Cement is a mixture because 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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cement is a mixture because it is composed of different type of compound particales. each of the component box concrete by themselves would be pur substance.
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