iGCSE Chemistry: Chemical energetics (complete unit) Cambridge

This excellent resource contains 2-3 lessons which cover Chemical energetics. Each lesson contains a starter activity with answers, notes, research tasks, questions with answers, practicals. The lessons include the follwing content:

Core:

• State that an exothermic reaction transfers thermal energy to the surroundings leading to an increase in the temperature of the surroundings
• State that an endothermic reaction takes in thermal energy from the surroundings leading to a decrease in the temperature of the surroundings
• Interpret reaction pathway diagrams showing exothermic and endothermic reactions
  Supplement:
• State that the transfer of thermal energy during a reaction is called the enthalpy change, ∆H, of the reaction. ∆H is negative for exothermic reactions and positive for endothermic reactions
• Define activation energy, Ea , as the minimum energy that colliding particles must have to react
• Draw and label reaction pathway diagrams for exothermic and endothermic reactions using information provided, to include: (a) reactants (b) products © enthalpy change of the reaction, ∆H (d) activation energy, Ea
• State that bond breaking is an endothermic process and bond making is an exothermic process and explain the enthalpy change of a reaction in terms of bond breaking and bond making
• Calculate the enthalpy change of a reaction using bond energies

**This resource can be used to teach IGCSE Chemistry (C5) or iGCSE Co-ordinated science (C6).
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