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AQ LS 1 and 2 Vocabu
| Term | Definition |
|---|---|
| Matter | Anything that has volume (takes up space) and has mass. |
| Pollutant | A substance that can make air, soil, or water harmful to 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 composed of a single type of particle and always has distinct, predictable properties. |
| 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 |