Chapter 7: Prentice Hall Chemistry
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Created by:
JGould10909 on February 28, 2012
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Vocabulary from chapter 7 in the Prentice Hall Chemistry book.
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13 terms
Terms | Definitions |
|---|---|
 chemical formula | Shows the kinds and numbers of atoms in the smallest representative unit of a substance |
| Valence electrons | The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds. |
| Electron dot structure | diagrams that show valence electrons as dots |
| Octet rule | States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons |
| Halide ion | a negative ion formed when a halogen atom gains an electron |
| Formula unit | the lowest whole-number ratio of ions in an ionic compound |
| Ionic bonds | formed when one or more electrons are transferred from one atom to another |
| Coordination number | the number of ions of opposite charge that surround each ion in a crystal |
| Metallic bonds | consist of the attraction of the free-floating valence electrons for the positively charged metal ions |
| Ionic compounds | compounds composed of cations and anions |
| Alloy | a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten |
| Anions | negatively charged ions |
| Cations | positively charged ions |
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