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Air Quality
| Term | Definition |
|---|---|
| Matter | physical substance |
| Pollutant | Pouring harmful chemicals or waste into the air |
| volume | the amount of space that a substance or object occupies |
| mass | a large body of matter with no definite shape |
| atom | the basic unit of a chemical element |
| molecule | a group of atoms bonded together |
| compound | a thing that is composed of two or more separate elements |
| pure substance | a singe type of material |
| physical change | does not change a substance |
| chemical change | Does change a substance |
| photosynthesis | When a green produces food and makes oxygen |
| qualitative data | deals with descriptions |
| quantitative data | deals with numbers |