C5

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  • Created by: Mr Davies
  • Created on: 16-04-19 11:03
What is an exothermic reaction?
Reaction where thermal energy is transfoerred from the chemicals to the surroundings. The temperature increases.
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What is an endothermic reaction?
Reaction where the thermal energy is transferred from the surroundings to the chemicals. The temperature decreases.
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What is the activation energy?
Minimum energy particals require to react
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Describe changes in energy when bonds are a) made b) broken
a) energy is released b) energy must be supplied
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State the equation to calculate the enthalpy change of a reaction
Energy Change = energy need breaking bonds - energy released making bonds
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Do endothermic and exothermic reactions have a +ve or -ve sign of energy change
Endo = +x Exo = -x
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What is a fuel cell?
Chemical cell with a continous supply of chemicals to fuel the cell
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Other cards in this set

Card 2

Front

What is an endothermic reaction?

Back

Reaction where the thermal energy is transferred from the surroundings to the chemicals. The temperature decreases.

Card 3

Front

What is the activation energy?

Back

Preview of the front of card 3

Card 4

Front

Describe changes in energy when bonds are a) made b) broken

Back

Preview of the front of card 4

Card 5

Front

State the equation to calculate the enthalpy change of a reaction

Back

Preview of the front of card 5
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