click below
click below
Normal Size Small Size show me how
Kala Stevenson
Chapter 6 vocab.
Term | Definition |
---|---|
electron dot diagram | A model of an atom in which each dot represents a valence electron. |
ion | An atom that has a net positive 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 anions together. |
chemical formula | A 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 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 has a positive or negative charge and acts as a unit. |
metallic bond | The attracttion 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. |