Ch 5 Science Vocab
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19 terms
Terms | Definitions |
|---|---|
 Valence Electron | The electrons that are in the highest energy level of an atom and that are involved in chemical reactions.. |
| Electron Dot Diagram | A representation of the valence electrons in an atom, using dots. |
| Chemical Bond | The force that holds atoms together. |
| Ion | An atom or group of atoms that has become electrically charged. |
| Polyatomic Ion | An ion that is made of more than one atom. |
| Ionic Bond | The attraction between oppositely charged ions. |
| Ionic Compound | A compound that consists of positive and negative ions. |
| Chemical Formula | A combination of symbols that represents the elements in a compound and their proportions. |
| Subscript | A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound |
| Crystal | An orderly, three-dimensional pattern of ions or atoms in a solid. |
| Covalent Bond | A chemical bond formed when two atoms share electrons. |
| Molecule | A neutral group of atoms joined by covalent bonds. |
| Double Bond | A chemical bond formed when atoms share two pairs of electrons |
| Triple Bond | A chemical bond formed when atoms share three pairs of electrons. |
| Molecular Compound | A compound that is composed of molecules (covalently bound together). |
| Polar Bond | A covalent bond in which electrons are shared unequally. |
| Nonpolar Bond | A covalent bond in which electrons are shared equally. |
| Alloy | A mixture made of two or more elements, one of which is a metal. |
| Metallic Bond | An attraction between a positive metal ion and the electrons surrounding it. |
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