4.5.1 Exothermic and endothermic reactions

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Learning Checklist & Knowledge Organiser

4.5.1 Exothermic and endothermic reactions

Describe how energy is transferred to or from the surroundings during a chemical reaction
Explain exothermic and endothermic reactions on the basis of the temperature change of the surroundings and give examples of everyday uses
Required practical 4: investigate the variables that affect temperature changes in reacting solutions
Describe what the collision theory is and define the term activation energy
Interpret and draw reaction profiles of exothermic and endothermic reactions, inc identifying the relative energies of reactants and products, activation energy and overall energy change
Explain the energy changes in breaking and making bonds and calculate the overall energy change using bond energies