#C3.2a
distinguish between endothermic and exothermic reactions on the basis of the temperature change of the surroundings
#C3.2b
draw and label a reaction profile for an exothermic and an endothermic reaction
activation energy, energy change, reactants and products
#C3.2c
explain activation energy as the energy needed for a reaction to occur
#C3.2d
calculate energy changes in a chemical reaction by considering bond making and bond breaking energies