Chains, Energy and Resources Definitions

Definitions needed for the Unit F322 exam.

So far only Energy defintions have been added, but I will add the rest later!

HideShow resource information
  • Created by: No Body
  • Created on: 31-05-14 17:09
Standard Conditions
Temperature = 298K, Pressure = 100kPa
1 of 13
Enthalpy Change of Reaction
Enthalpy change when the reaction occurs in the molar quantities shown in the chemical reaction.
2 of 13
Enthalpy Change of Formation
Enthalpy change when one mole of a compound is formed from its elements.
3 of 13
Enthalpy Change of Combustion
Enthalpy change when one mole of a substance is completely burned in oxygen.
4 of 13
Standard Enthalpy Change of Reaction
Enthalpy change when the reaction occurs in the molar quantities shown in the chemical equation in their standard states and standard conditions.
5 of 13
Standard Enthalpy Change of Formation
Enthalpy change when one mole of a compound is formed from its elements in their standard states and at 298K and 1 atmosphere.
6 of 13
Standard Enthalpy Change of Combustion
Enthalpy change when one mole of a substance is completely burned in oxygen at 298K and 1 atmosphere.
7 of 13
Hess's Law
Total enthalpy change is independent of route.
8 of 13
Average Bond Enthalpy
Energy needed to break one mole of gaseous bonds.
9 of 13
Activation Energy
Minimum energy needed for a reaction to occur.
10 of 13
Catalyst
Speeds up a reaction. Increases the rate of a chemical reaction without being used up.
11 of 13
Le Chatelier's Principle
When the conditions of a system in equilibrium are changed, the equilibrium moves to oppose change.
12 of 13
Dynamic Equilibrium
Rates of forward and backward reactions are equal - concentrations are equal.
13 of 13

Other cards in this set

Card 2

Front

Enthalpy change when the reaction occurs in the molar quantities shown in the chemical reaction.

Back

Enthalpy Change of Reaction

Card 3

Front

Enthalpy change when one mole of a compound is formed from its elements.

Back

Preview of the back of card 3

Card 4

Front

Enthalpy change when one mole of a substance is completely burned in oxygen.

Back

Preview of the back of card 4

Card 5

Front

Enthalpy change when the reaction occurs in the molar quantities shown in the chemical equation in their standard states and standard conditions.

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Defintions resources »