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Ch 4 Chem
Ch 4 Atoms & Bonding
| Term | Definition |
|---|---|
| valence electron | the electrons that are in the highest energy level of an atom and that are involved in chemical bonding |
| electron dot diagram | a representation of the valence electrons in an atom, using dots |
| chemical bond | the force of attraction that holds 2 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 contains positive and negative ions |
| chemical formula | symbols that show the elements in a compound and the ratio of elements |
| 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 | a solid in which the atoms are arranged in a pattern that repeats again and again |
| covalent bond | a chemical bond formed when 2 atom share electrons |
| molecule | a neutral group of 2 or more atoms held together 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 |
| nonpolar bond | a covalent bond in which electrons are shared equally |
| polar bond | a covalent bond in which electrons are shared unequally |
| metallic bond | an attraction between a positive metal ion and the electrons surrounding it |
| alloy | a mixture of 2 or more elements, at least one of which is a metal |
Created by:
lrlong
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