Containing substances that can cause harm to people, plants, animals, and structures; unclean or impure A substance that can make air, soil, or water harmful to organisms and structures The condition of air in terms of the amount of pollutants it contains The introduction of chemicals, particles, or organisms to air that are harmful to the living things and structures

1. Polluted

Containing substances that can cause harm to people, plants, animals, and structures; unclean or impure

2. Pollutant

A substance that can make air, soil, or water harmful to organisms and structures

3. Air Quality

The condition of air in terms of the amount of pollutants it contains

4. Air Pollution

The introduction of chemicals, particles, or organisms to air that are harmful to the living things and structures.

5. Volume

A measure of how much space something takes up.

6. mass

the amount of "stuff" something contains

7. balance

an instrument used by scientists to measure mass

8. matter

anything that has volume (takes up space) and has mass

9. state

form, type, or kind

10. macroscopic

a word used to describe an observation that can be seen by the unaided eye