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matter
lesson 1
| Term | Definition |
|---|---|
| volume | the amount of space an object takes up |
| atom | the smallest particle that can still be identified as the matter it came from |
| molecule | made up of two or more atoms joined together |
| nucleus | dense area in the center |
| element | matter that is made of only one kind of atom |
| periodic table | to organize the elements scientists use a chart |