thermochem

endothermic

absorption of heat - energy is positive

sublimation

solid to gas (endothermic)

melting

solid to liquid (endothermic)

evaporation

liquid to gas (endothermic)

exothermic

release of heat - energy is negative

freezing

liquid to solid (exothermic)

condensation

gas to liquid (exothermic)

deposition

gas to solid (exothermic)

potential energy

energy stored

kinetic energy

energy of motion

law of energy

energy cannot be created of destroyed

enthalpy

heat content at constant pressure

enthalpy of reaction

heat absorbed or released by a chemical reaction

calorimetry

the process of measuring heat based on temperature change

Q in Q=mc🔺T

heat (calculated in J)

m in Q=mc🔺T

mass (calculated in g)

c in Q=mc🔺T

heat capacity (calculated in J/g°C)

🔺T in Q=mc🔺T

change in temperature (calculated in °C)

in enthalpy endothermic is has-

reactants and positive answer (🔺H+)

in enthalpy exothermic is has-

products and negative answer (🔺H-)

when you solve for an enthalpy reaction you-

switch products and reactants