Chemical energetics
Energetics of a reaction
Core
•
Describe the meaning of exothermic and endothermic reactions
•
Interpret energy level diagrams showing exothermic and endothermic reactions
Supplement
•
Describe bond breaking as an endothermic process and bond forming as an exothermic
process
•
Draw and label energy level diagrams for exothermic and endothermic reactions using
data provided
•
Calculate the energy of a reaction using bond energies
Energy transfer
Core
•
Describe the release of heat energy by burning fuels
•
State the use of hydrogen as a fuel
Describe radioactive isotopes, such as
235
U, as a source of energy
Supplement
•
Describe the use of hydrogen as a fuel reacting with oxygen to generate electricity
in a fuel cell. (Details of the construction and operation of a fuel cell are not required.)
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