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Science
Term | Definition |
---|---|
Matter | anything that 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 that something can hold |
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 | Any material with a definite chemical composition |
Physical Change | A change from one state (solid or liquid or gas) to another without a change in chemical composition |
Chemical Change | Determined by the atomic and molecular composition and structure of the substances involved |
Photosynthesis | The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. |
Qualitative Data | Observations reported using words or pictures |
Quantitative Data | Observations reported using numbers. |