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AQ LS 1-2 vocab
Flash cards for air quality vocab
Term | Definition |
---|---|
Matter | Anything that has volume and mass. |
Polutant | A substance that can make air, soil, or water a harmful substance. |
Volume | A measure of how much space something takes up. |
Mass | The amount of "stuff" something contains. |
Atom | The basic building block of matter. |
Molecuele | A combination of two or more atoms. |
Compound | A pure substance made up of two or more 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. |
Photosynthisis | The process through which green plants use the energy of sunlight to make food and oxygen. |
Qualitive data | Data sampled from observations. |
Quantitive data | Data sampled with numbers and direct measurements. |