Which of the following best describes the difference between a mixture and a pure substance?

A.
A mixture has the same properties throughout; a pure substance has the different properties throughout.
B.
A mixture has different properties throughout; a pure substance has the same properties throughout.
C.
A mixture is made up of only one type of atom; a pure substance is made up of more than one type of atom.
D.
A mixture is made up of more than one type of atom; a pure substance is made up of only one type of atom.

1 answer

The best description of the difference between a mixture and a pure substance is:

B. A mixture has different properties throughout; a pure substance has the same properties throughout.

Mixtures can vary in composition and may have different properties in different parts, while pure substances have a uniform composition and consistent properties throughout.