Chemists investigated an unknown substance and found it to have the following characteristics: -different components could be observed in the substance. -different samples of the substance appeared to have different proportions of the components. -the components could be easily separated using filters and sorting. which statement most accurately describes this substance? a. the substance is a compound. b. the substance is an element. c. the substance is a heterogeneous mixture. d. the substance is a homogeneous mixture.
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