Mrs. Link chemistry terms ch. 7
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13 terms
Terms | Definitions |
|---|---|
 valence electrons | electrons in the highest occupied energy level |
| ionic compounds | cation + anion, composed of ions, are neutral |
| formula unit | the lowest whole number ratio of ions in an ionic compound |
| octet rule | in forming chemical bonds, atoms tend to achieve the electron configuration of a noble gas |
| ionic bond | the electrostatic forces that hold anions and cations together |
| coordination number | number of ions of opposite charges that surround the ion in a crystal |
| cation | positively charged ion |
| chemical formula | shows what elements and numbers of atoms in smallest representative unit of a substance |
| metallic bonds | the attraction of the floating valence electrons to the positively charged metal cations |
| anion | negatively charged ion |
| alloy | mixture composed of two or more elements, one of which is a metal |
| ductile | able to be drawn into wire |
| malleable | able to be pressed into a sheet |
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