Question

PLZZZZZZZZZ HELPPPP

how is a pure substance different from a mixture?
A. a pure substance is heterogeneous
B. mixtures cannot be separated by physical means
C. A mixture is made of one substance
D. pure substances cannot be separated by physical means

Answer 1

I believe its D. Pure substance cannot be separated by physical means

Answer 2

Well, it definitely isn't A nor B, nor C. So, your answer will be D.

I hope I helped :)