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chapter 3 vocab
| Term | Definition |
|---|---|
| matter | any material that has mass and occupies space, 64 |
| atom | the basic unit of matter; the smallest unit that maintains the chemical properties of an element, 64 |
| element | a chemical substance with a unique set of properties that cannot be broken down into substances with other properties, 64 |
| nucleus | the central core of an atom; consists of protons and neutrons, 65 |
| molecule | a combination of two or more atoms, 66 |
| com |