Question

name: surname: q.5. which of the diagrams below represent a mixture?

Explanation:

Step1: Recall mixture definition

A mixture contains two or more different substances not chemically combined.

Step2: Analyze each diagram

In diagram a, there is only one - type of particle, so it's a pure substance. In diagram b, there are two different types of particles (single - atom and di - atomic), representing a mixture. In diagram c, there is only one type of di - atomic particle, a pure substance. In diagram d, there is only one type of di - atomic particle, a pure substance.

Answer:

b)