Question

Which one of the following is correct about the categories of matter physical scientists recognize?

Answer 1

A.
Compounds are either mixtures or pure substances.

B.
Pure substances are either mixtures or compounds.

C.
Pure substances are either elements or compounds.

D.
Elements are either pure substances or compounds.

Answer 2

I think it's A..

Answer 3

A compound is not the same thing as a mixture. Doyou have the definitions?

Answer 4

compound when pure is HOMOGENEOUS...mostly it differs from element to element...
so it would be C.