click below
click below
Normal Size Small Size show me how
science vocab 6
| Question | Answer |
|---|---|
| electron dot diagram | a model of an atom in which each dot represents a valence electron |
| ion | an atom that has a net positive or negative electric charge |
| anion | an ion with a negative charge |
| cation | an ion with a positive charge |
| chemical bond | the force that holds atoms or ions together as a unit |
| ionic bond | the force that holds cations and ions togther |
| chemical formula | a notation that shows what elements a compound contains and the ration of the atoms or ions of the elements in the compound |
| crystals | solids with particles arranged in a lattice structure |
| covalent bond | a chemical bond in which two atoms share a pair of valence electrons |
| molecule | a neutral group of atoms that are joined together by one or more covalent bonds |
| polar covalent bond | a covalent bond in which electrons are not shared equally |
| polyatomic ion | a covalently bonded group of atoms that had a positive or negative charge and acts as a unit |
| metallic bond | the attraction between a metal cation and the shared electrons that surround it |
| alloy | a mixture of two or more elements at least one of which is a metal that has the characteristic properties of a metal |