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2 January, 23:47

A chemist is studying an unknown substance. He can break it into its elemental components only by using chemical means. Based on this observation, how should the unknown substance be classified?

A) impure substance

B) solution

C) mixture

D) pure substance

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  1. 2 January, 23:54
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    We are given with the situation where a chemist uses chemical means to separate the unknown sample into its elemental forms. In this case, it cannot be a mixture since it can be separated physically. Neither pure substance since it comprises only with one element. The answer is B. solution using chemical reactions
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