How can we help?

You can also find more resources in our Help Center.

Thermochemistry Vocab

STUDY
PLAY
energy
The ability to do work or cause change
law of conservation of energy
the law that states that energy cannot be created or destroyed but can be changed from one form to another
chemical potential energy
energy stored in chemical bonds
heat
thermal energy transferred from one object to another because of a temperature difference
calorie
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
joule
a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second
specific heat
the heat required to raise the temperature of one gram of a substance one degree centigrade
calorimeter
an insulated device used to measure the absorption or release of heat in chemical or physical processes
thermochemistry
the study of the transfers of energy as heat that accompany chemical reactions and physical changes
enthalpy
the heat content of a system at constant pressure
enthalpy of reaction
the amount of energy released or absorbed as heat during a chemical reaction
molar enthalpy of fusion
the amount of energy as heat required to chang 1 mol of a substance from solid to liquid at constant temperature and pressure
molar enthalpy of vaporization
the amount of energy as heat that is needed to vaporize one mole of liquid at the liquid's boiling point
standard enthalpy of formation
the enthalpy change for the reaction that produces 1 mol of a compound in its standard state from its elements in their standard states.
sensible heat
heat that causes a change in temperature
latent heat
heat absorbed or given off during a change of phase at a constant temperature
temperature
a relative measure of how hot or cold something is measured on a scale, or the average kinetic energy of the particles in a substance or object.