Chemistry · Triple Science Higher
Energy Changes
Spec 4.5Paper 11 required practical5 subtopics
Subtopics
1
Exothermic and Endothermic Reactions
Define exothermic and endothermic reactions, give examples and describe their energy changes.
2
Reaction Profiles
Draw and interpret reaction profile diagrams for exothermic and endothermic reactions.
3
Cells and Batteries
Describe how chemical cells and batteries produce electrical energy and factors affecting voltage.
4
Fuel Cells
Describe how hydrogen fuel cells work and evaluate their advantages and disadvantages.
5
Bond Energy Calculations
Use bond energies to calculate the energy change of a reaction.
Higher tier only
Bond energy calculations
Comparing fuel cells vs batteries
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Rate and Extent of Chemical Change