Definitions
Material which slows down or stops the flow of either heat or electricity
Insulators
Movement of electric charge, usually electrons
Electricity
Forming new bonds releases more energy than it takes to break the old bond
Exothermic
Forming new bonds in the products releases LESS energy than it took to break the original bonds
Endothermic
Solution that can still dissolve more solute
Unsaturated
Material that allows electrons to flow easily through them
Conductors
Mixture of two or more substances that is uniform
Solution
Uniform mixture (no layers seen)
Homogeneous
Measured rate of decay; amount of time it takes for half the atoms in a sample to decay
Half-Life
Ability of certain elements to give off invisible energy
Radioactivity
Average mass of any element in amu
Atomic Mass
Part of the mixture that IS dissolved
Solute
State in which the rate of the forward reaction equals the rate of the reverse reaction
Chemical Equilbrium
Molecule that can be added to a reaction to speed it up
Catalyst
Solution that contains as much solute as the solvent can dissolve
Saturated
Solid Mixture of one or more elements
Alloy
Amount of solute that can be dissolved in a volume of solvent
Solubility
Energy needed to begin a reaction and break chemical bonds in the reaction
Activation Energy
Change in concentration of reactants or products over time
Reaction Rate
Not a uniform mixture; particles are large enough to create layers
Heterogenous
Properties repeat each period of the periodic table
Periodicity
Insoluble
More dissolved solute than the maximum solubility. Made up by heating the solvent, adding in the solute and cooling slowly
Supersaturated
Part of the mixture that is present in the greatest amount and that does the dissolving