has a uniform composition and is able to be separated by physical means
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has a uniform composition and is able to be separated by physical means
has a heterogeneous composition and is able to be separated by physical means
has a heterogeneous composition and is able to be separated by chemical means
has a uniform composition and is only able to be separated by chemical means
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has a uniform composition and is able to be separated by physical means
has a uniform composition and is able to be separated by physical means
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