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Air Quality LS 1-2
| Term | Definition |
|---|---|
| Matter | Anything that has volume and has mass |
| Pollutant | A substance that can make air, soil, or water harmful to living organisms and structures |
| Volume | A measure of how much space something takes up |
| Mass | The amount of "stuff" something contains |
| Atom | The basic building block of matter |
| Molecule | A combination of two or more atoms |
| Compound | A pure substance made up of two or more different elements |
| Pure Substance | A type of matter made up of a single type of particle |
| Physical Change | A change in the form or appearance of matter, but not in its composition |
| Chemical Change | A change in the composition, or chemical makeup, of a sample of matter. A chemical change is also known as a chemical reaction |
| Photosynthesis | The process through which green plants use the energy of sunlight to make food and oxygen |
| Qualitative Data | observations reported using words or pictures |
| Quantitative Data | observations reported using numbers |