Thermochemistry unit 8

Temperature

measure of motion of particles (kinetic energy through celsius or kelvin)

Heat

describes the amount of energy being transferred (measured in joules or calories)

endothermic reaction

energy is absorbed as the reaction proceeds

exothermic reaction

energy is released as the reaction proceeds

enthalpy

signified by “H”, the amount of heat released or absorbed during a chemical reaction

endothermic graph

reactants start low, go up high then come back down in the middle near the red energy line

exothermic graph

reactants start in the middle, go up, then go all the way down (products)

Endothermic equation

energy + reactants = products

exothermic reactions

products + energy = reactants

specific heat

amount of heat required to raise the temperature, low SH absorbs heat quicker (good conductors), high SH absorbs heat slower (good insulators)

Specific heat equation

q (heat) / Mass x temperature change