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Cumulative Vocabulary List for part 1 on 10/19/15

Anion A negative ion formed by gaining electrons.
Cation A positive ion formed by giving electrons.
Dissociation The splitting of a molecule into smaller molecules, atoms, or ions, especially by a reversible process.
Ionization The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions.
Buffer A solution that resists changes in pH when acid is added to it.
SI Unit A system of physical units ( SI Units ) based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten.
Absolute Zero The temperature (-273.15C) at which all motion in matter stops and is thought to be unreachable.
Endothermic A chemical reaction which absorbs heat.
Exothermic A chemical reaction which releases heat.
Polyatomic Ion A charged ion composed of two or more atoms bonded to each other with a covalent bond.
Created by: palmer897