Energetics ( AS Level Chemistry)

5 Full Lessons on Energetics in AS Level Chemistry. See below for the lesson objectives

Lesson 1: Enthalpy and Reactions
LO1: To explain that some chemical reactions are accompanied by enthalpy changes that are exothermic or endothermic
LO2: To construct enthalpy profile diagrams to show the difference in the enthalpy of reactants compared with products
LO3: To qualitatively explain the term activation energy, including use of enthalpy profile diagrams

**Lesson 2: Enthalpy Changes **

LO1: To know what standard conditions are
LO2:To understand the terms enthalpy change of combustion, neutralisation and formation
LO3:To construct balanced symbol equations based on the terms enthalpy change of combustion, neutralisation and formation.

Lesson 3: Bond Enthalpies

LO1: To explain the term average bond enthalpy
LO2:To explain exothermic and endothermic reactions in terms of enthalpy changes associated with the breaking and making of chemical bonds
LO3:To apply average bond enthalpies to calculate enthalpy changes and related quantities

**Lesson 4: Calorimetry **

LO1:To determine enthalpy changes directly from appropriate experimental results, including use of the relationship q=mcΔT
LO2:To know the techniques and procedures used to determine enthalpy changes directly using a coffee cup calorimeter
LO3:To know the techniques and procedures used to determine enthalpy changes indirectly using a copper calorimeter

**Lesson 5: Hess’ Law & Enthalpy Cycles **

LO1: To state Hess’ Law
LO2: To calculate the enthalpy change of a reaction from enthalpy changes of combustion using Hess’ Law
LO3:To calculate the enthalpy change of a reaction from enthalpy changes of formation using Hess’ Law

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