Prior knowledge: AS Chemistry 3.1.7 Oxidation, reduction and redox equations. – 3.1.11.1 Electrode potentials and cells Time Learning Outcome Learning activity with opportunity to Assessment Resources Learning objective taken develop skills opportunities The idea of a cell that has 1.0 Nuffield Science Data Students make simple cells and use January 2013 Unit 5 Students should be able to: a potential difference being weeks them to measure EMF and unknown Question 7 Book (free download): understand that there is a electrode potentials (AO2 - Apply (QW13.5.07) made by combining two potential difference knowledge and understanding; PS half cells (electrodes). January 2012 Unit 5 between two half cells 1.1 - Solve problems set in practical Question 4 (electrodes) that are joined contexts; AT j - Set up (QW12.5.04) How potentials are Chemistry Data Book use cell notation to electrochemical cells and measuring June 2006 Unit 5 measured relative to the represent cells (Starck, Wallace, voltages). Question 5 Standard Hydrogen McGlashan) ISBN: understand that potentials Students write the standard cell (QS06.5.05) Electrode and under are measured relative to 9780719539510 notation for cells (AO2 - Apply January 2004 Unit 5 the Standard Hydrogen standard conditions. Chemistry Review knowledge and understanding). Question 4 Electrode articles: Understanding Students predict how changes in (QW04.5.04) understand that the Use the electrochemical electrode potentials conditions will affect EMF (AO2 - potential of an electrode is series to calculate the EMF (Volume 12, edition 1) Apply knowledge and affected by conditions understanding). of cells and predict the Electrode potentials know the standard direction of simple redox (Volume 15, edition 3) Students could be asked to plan and conditions under which carry out an experiment to reactions. potentials are measured investigate the effect of changing Some suitable problems know that electrode conditions, such as concentration or Required practical 8 can be found at and potential are listed in order temperature, in a voltaic cell such as Measuring the EMF of an (subscription required) in the electrochemical Zn|Zn2+||Cu2+| Cu (AO2 - Apply electrochemical cell. series knowledge and understanding; PS 1.1 - Solve problems set in practical contexts; PS 2.4 - Identify variables
Prior knowledge: AS Chemistry 3.1.7 – Oxidation, reduction and redox equations. 3.1.11.1 Electrode potentials and cells Learning objective Time taken Learning Outcome Learning activity with opportunity to develop skills Assessment opportunities Resources The idea of a cell that has a potential difference being made by combining two half cells (electrodes). How potentials are measured relative to the Standard Hydrogen Electrode and under standard conditions. Use the electrochemical series to calculate the EMF of cells and predict the direction of simple redox reactions. Required practical 8 Measuring the EMF of an electrochemical cell. 1.0 weeks Students should be able to: understand that there is a potential difference between two half cells (electrodes) that are joined use cell notation to represent cells understand that potentials are measured relative to the Standard Hydrogen Electrode understand that the potential of an electrode is affected by conditions know the standard conditions under which potentials are measured know that electrode potential are listed in order in the electrochemical series Students make simple cells and use them to measure EMF and unknown electrode potentials (AO2 - Apply knowledge and understanding; PS 1.1 - Solve problems set in practical contexts; AT j - Set up electrochemical cells and measuring voltages). Students write the standard cell notation for cells (AO2 - Apply knowledge and understanding). Students predict how changes in conditions will affect EMF (AO2 - Apply knowledge and understanding). Students could be asked to plan and carry out an experiment to investigate the effect of changing conditions, such as concentration or temperature, in a voltaic cell such as Zn|Zn2+||Cu2+| Cu (AO2 - Apply knowledge and understanding; PS 1.1 - Solve problems set in practical contexts; PS 2.4 - Identify variables January 2013 Unit 5 Question 7 (QW13.5.07) January 2012 Unit 5 Question 4 (QW12.5.04) June 2006 Unit 5 Question 5 (QS06.5.05) January 2004 Unit 5 Question 4 (QW04.5.04) Nuffield Science Data Book (free download): Chemistry Data Book (Starck, Wallace, McGlashan) ISBN: 9780719539510 Chemistry Review articles: Understanding electrode potentials (Volume 12, edition 1) Electrode potentials (Volume 15, edition 3) Some suitable problems can be found at and (subscription required)
AQA-7405-SOW.DOCX