• Activation Energy;
    Ea`
  • The amount of energy needed to reach the transition state, thus starting a chemical reaction.
  • First Law of Thermodynamics
  • The energy of the universe is constant.
  • Second Law of Thermodynamics
  • 1) A process can only be spontaneous in one direction.
    2) The entropy of the universe always increases during spontaneous reactions.
  • Heat of Formation;
    ΔH°f
  • Change in energy that occurs when one mole of a compound is formed from its component pure elements under standard conditions.
  • Enthalpy Change;
    ΔH
  • Measure of the energy that's released or absorbed when a chemical reaction occurs at standard pressure.
  • Exothermic
  • Type of reaction when a chemical reaction releases energy.
  • Endothermic
  • Type of reaction when a chemical reaction absorbs energy.
  • Heat Capactiy;
    Cp
  • Measure of how much an object's temperature is raised when it absorbs heat.
  • Specific Heat;
    c
  • Amount of heat needed to raise the temperature of 1 gram of a substance by 1°C.
  • Entropy;
    S
  • Measure of randomness or disorder of the system.
    The greater the disorder, the greater its ___ .