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science
chemistry
| chemistry | definitions |
|---|---|
| atom | smallest particle of an element |
| molecule | smalleast particle of a substance |
| electron | negatively charged particle in an atom |
| proton | positively charged particle in an atom |
| neutron | neutral particle in an atom |
| nucleus | center of an atom |
| element | madeup of only one kind of atoms |
| compound | made od more than one kind of atom |
| homogeneous | uniform |
| herogeneous | nonuniform |