 | Term | Definition |
| |
energy |
the ability to do work |
| |
calorimeter |
a device used to measure the change in temperature while a reaction takes place |
| |
heat of fusion |
the heat absorbed by one mole of substance when it melts |
| |
heat of vaporization |
heat absorbed by one mole of substance when it boils |
| |
kinetic energy |
the energy of moving particles |
| |
potential energy |
the energy contained in chemical bonds |
| |
entropy |
a measure of the disorder of a system |
| |
system |
the reaction that we are studying |
| |
surroundings |
everything outside the system |
| |
enthalpy |
the heat content of a system at constant pressure |
| |
specific heat |
the heat needed to raise the temperature of one gram of a substance by one degree Celsius |
| |
endothermic |
describes a reaction that absorbs energy from the surroundings |
| |
exothermic |
describes a reaction that releases energy to the surroundings |
| |
Joule |
the SI unit of energy and heat |
| |
Kelvin |
the SI unit of temperature |
| |
temperature |
a measure of the kinetic energy of a substance |
| |
activation energy |
the energy needed to make a reaction occur |
| |
catalyst |
a substance that increases the rate of a reaction |
| |
inhibitor |
a substance that decreases the rate of a reaction |
| |
activated complex |
a temporary, unstable arrangement of molecules |
