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Air Quality
Air Quality flashcards
Term | Definition |
---|---|
matter | anything that has volume or takes up space |
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 2 or more atoms |
compound | a pure substance made up of 2 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. 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 | data written in the form of qualities |
quantitative data | data written in the form of #'s or equations |