Question

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

OA 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.
OA mixture can be made up of a single compound, but a pure substance cannot.

Answer 1

A mixture can vary in composition, but a pure substance has a set composition.

Step-by-step explanation:

The main difference between a mixture and a pure substance is that a mixture can vary in composition, but a pure substance has a set composition.