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Science Lesson 1 & 2
Term | Definition |
---|---|
Matter | Anything that has volume and 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" 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 a distinct, predictable properties. |
Physical Change | A change in the form or appearance of a matter, but not in it's composition. |
Chemical Change | A change in the composition of a sample matter. |
Photosynthesis | The process through which green plants use the energy of sunlight to make food and oxygen. |