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AQ LS 1 and 2
Vocabulary
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 structure. |
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 of appearance of matter, but not in its composition. |
Chemical Changes | A change in the composition, or chemical make up, of a sample of matter. A chemical change is also unknown as a chemical reaction. |
Photosynthesis | The process through which green plants use the energy of sunlight to make food and oxygen. |
Qualitative data | Data that approximates or characterizes but does not measure the attributes, characteristics, properties, etc., of a thing or phenomenon. |
Quantitative data | Data that can be quantified and verified, and is amenable to statistical manipulation. |