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Phy Sci 17/18
17/18 definitions
| Term | Definition |
|---|---|
| Elements represented by | chemical symbols |
| single elements | monatomic |
| diatomic elements | hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine |
| elements arranged in specific order with all their details (Mendeleeev) | periodic table of elements |
| The properties of the elements vary with their atomic numbers in a periodic way. | periodic law of elements |
| Solid, ductile, malleable, highly conductive, and chemically active | metal |
| Gas, liquid, dull, brittle, room temp, poor conductors | nonmetal |
| tells how many valence electrons | groups |
| group 1 | alkali |
| group 2 | alkaline earth metals |
| group 1b to 8b | transition |
| group 3 | boron |
| group 4 | carbon |
| group 5 | nitrogen |
| group 6 | oxygen |
| group 7 | halogen |
| group 8 | noble gases |
| Horizontal rows | periods |
| Symbol with dots around it | electron dot structure |
| Have full 8 electrons | octet rule |
| How well an atom holds or attracts electrons | electron affinity |
| how well an atom can attract or hold an electron when bonded to other atoms. | electronegativity |
| when atoms share electrons(nonmetal-nonmetal) | covalent bond |
| Atom which gains electrons and becomes an anion (metal-nonmetal) | ionic bond |
| metal-metal | metallic bond |
| three or more atoms | polyatomic molecules |
Created by:
e-babe
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