Question

Which of the following is an example of a mixture?
A.
the atmosphere
B. water
C.
calcium
D.
carbon dioxide

Answer 1

A. The atmosphere

All the other examples are either elements or compounds, not mixtures. A mixture is a combination of elements that are not chemically or irreversibly conjoined so the atmosphere, made up of a variety of gases, would be a mixture.

Answer 2

Answer:

The atmosphere

Explanation:

study island