• Heat is a form of energy.

• Temperature is a measure of the average kinetic energy of the particles.

• Total energy is conserved in chemical reactions.

• Chemical reactions that involve transfer of heat between the system and the surroundings are described as endothermic or exothermic.

• The enthalpy change (∆H) for chemical reactions is indicated in kJ mol-1.

• ∆H values are usually expressed under standard conditions, given by ∆H°, including standard states.

• Calculation of the heat change when the temperature of a pure substance is changed using q=mc∆T

• A calorimetry experiment for an enthalpy of reaction should be covered and the results evaluated.

• Enthalpy changes of combustion (∆𝐻_c^θ) and formation (∆𝐻_f^θ) should be covered.

• Consider reactions in aqueous solution and combustion reactions.