thermochem

Thermochemistry-study of heat change that accompanies physical changes and chemical reactions

Heat-energy transfer between samples of matter

Heat of Fusion-amount of energy per gram needed to change from solid to liquid at its melting point

Temperature-average amount of kinetic energy in an object

Heat of Vaporization-amount of energy needed to change from liquid to gas at its boiling point

Joule-si unit for energy

Endothermic-reaction gains energy from surroundings

Specific Heat Capacity-amount of heat needed to raise 1 gram of a substance 1C

Hess’s Law-the overall enthalpy of a reaction is equal to the sum of every step reaction deltaH

Enthalpy-the amount of energy absorbed or lost by a reaction

Exothermic-reaction releases energy into surroundings