Question

The air that we breathe contains oxygen, water, nitrogen, dust, pollen, pollution, and

other materials. We can clean air using an air filter. Air is most likely

A. An element

B. A molecule

C. A mixture

D. A compound

Answer 1

Correct answer is C: Air is a mixture in which the components named above are physically combined.
Not A because air does not only consist of a single substance.
Not B because air is not made up of two or more atoms joined together.
Not D because air does not consist of two or more elements chemically combined together.

Answer 2

Answer: A Mixture.

Explanation: A Mixture is a combination of several substances or element.

A combination of Oxygen, Water, nitrogen, dust, pollen and pollution which makes up the Air makes it a mixture as deducted from the definition of mixture.