Question

What is a main difference between a mixture and a pure substance?

A mixture is only a liquid, but a pure substance can be in any state.
OA mixture looks the same throughout, but a pure substance does not.
A mixture can vary in composition, but a pure substance has a set composition
O A mixture can be made up of a single compound, but a pure substance cannot.

Answer 1

a pure substance is a form of matter that has a constant throughout the sample. mixtures are physical combinations of two or more elements or compounds, pretty sure it’s the third one