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chapter 6 vocabulary
Term | Definition |
---|---|
Electron dot diagram | model of an atom in which each dot represents a valence electron |
ion | atom that has a net positive or negative charge |
anion | ion with a negative charge |
cation | ion with a positive charge |
chemical bond | force that holds atoms or ions together |
ionic bond | force that holds cations and anions together |
chemical formula | notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound |
crystals | solids whose particles are arranged in lattice structure |
covalent bond | chemical bond in which two atoms share a pair of valence electrons |
molecule | neutral group of atoms joined together by one or more covalent bond |
polar covalent bond | covalent bond in which electrons are not shared equally |
polyatomic ion | covalentely bonded group of atoms that has a positive or negative charge and acts as a unit |
metallic bond | attraction between a metalcation and the shared electrons surrounding it |
alloy | mixture of two or more elements and atleast one is a metal |