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Basic Bio
Basic Bio Ch. 2-1 Voc.
| Term | Definition |
|---|---|
| Atom | the smallest unit of an element that maintains the properties of that element |
| Element | a substance that cannot be separated or broken down into similar substance by chemical means |
| Compound | a substance made up of atoms of two or more different elements joined by chemical bonds |
| Molecule | the smallest unit of a substance that keeps all of the physical and chemical properties of that substance; it can consists of one atom or two or more atoms bonded together |
| Ion | an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge |