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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 |