Enthalpy Changes

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What is Enthalpy?
a measure of heat energy in a chemical system
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What is Enthalpy Change?
the amount of energy released/ taken  in during a chemical reaction
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What is Activation Energy
the minimum energy required  for a reaction to take place. 
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Standard enthalpy change for a reaction
the enthalpy change that accompanies a reaction in the molar quantities shown in a chemical equation, under standard conditions, with all the reactants and products in their standard states
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Standard enthalpy change of combustion
the enthalpy change that occurs when 1 mole of a substance burns completely in oxygen under standard conditions, with all reactants and products in their standard states
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Standard enthalpy change of formation
the enthalpy change that occurs when 1 mole of a compound is formed from its elements under  standard conditions, with all reactants and products in  their standard states.
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Standard enthalpy change of neutralisation
the enthalpy change that accompanies the reaction of an acid by a base to form 1 mole of H2O(l), under  standard conditions, with all reactants and products in  their standard states.
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Card 2

Front

What is Enthalpy Change?

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the amount of energy released/ taken  in during a chemical reaction

Card 3

Front

What is Activation Energy

Back

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Card 4

Front

Standard enthalpy change for a reaction

Back

Preview of the front of card 4

Card 5

Front

Standard enthalpy change of combustion

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