Lesson Plan: C1.7.07


LESSON PLAN
Teacher Subject Period Date Year Ability LSA/Other Support
Science

Context and
Landmark
Assessment		 C1.7.07
Landmark Assessment: Progress Observation Opportunity
Remember to have high expectations
Lesson Title: Today we are learning about
What products will be created at the electrodes during electrolysis?
Remember to check for PROGRESS
Focus on Knowledge, Skills and Understanding
Success Criteria: You will show your learning by...
  1. The ions discharged when an aqueous solution is electrolysed using inert electrodes depend on the relative reactivity of the elements involved.
  2. At the negative electrode (cathode), hydrogen is produced if the metal is more reactive than hydrogen.
  3. At the positive electrode (anode), oxygen is produced unless the solution contains halide ions when the halogen is produced.
  4. This happens because in the aqueous solution water molecules break down producing hydrogen ions and hydroxide ions that are discharged.
  5. Students should be able to predict the products of the electrolysis of aqueous solutions containing a single ionic compound.
  6. (HT only) students should be able to write half equations for the reactions occurring at the electrodes during electrolysis, and may be required to complete and balance supplied half equations for this process . (MS)
Think about how you can match the needs of ALL students
Keywords:
    Links: Literacy, Numeracy, SMSC, British values
    Memory Anchor:

    AFL/Key Questions:
    1. Why is hydrogen produced instead of sodium in the electrolysis of NaCl solution?
      The ions discharged when an aqueous solution is electrolysed using inert electrodes depend on the relative reactivity of the elements involved. Sodium is more reactive than hydrogen so forms NaOH in solution. Hydrogen gas is discharged at the electrode.
    2. When is hydrogen produced at the negative electrode in electrolysis?
      At the negative electrode (cathode), hydrogen is produced if the metal is more reactive than hydrogen.
    3. When is oxygen not produced at the positive electrode?
      At the positive electrode (anode), oxygen is produced unless the solution contains halide ions when the halogen is produced.
    4. Why are hydrogen and oxygen often discharged in the electrolysis of aqueous ionic solutions?
      Oxygen and hydrogen gas are discharged because in the aqueous solution water molecules break down producing hydrogen ions and hydroxide ions that are discharged.
    5. What are the three products made in the electrolysis of aqueous sodium chloride?
      The three products of the electrolysis of NaCl would be NaOH, Cl2 and H2.
    6. (HT)
      (HT)
    Identify questions for high, middle, low and identify questioning techniques- Challenge questions

    Learning Phases/Episodes
    Think about how you can match the needs of ALL students
    Differentiation: AGT, SEND, LLL, Disadvantaged
    Remember to check for PROGRESS
    Starter Activity Differentiation and Challenge question/task
    • Students to copy and complete the keywords.
    • Teacher reveals missing letters; Students correct mistakes;
    • Discuss the scientific meanings of the words.
    • Students to write down the definitions of the most important / new keywords.
    • Discuss the 'Memory Anchor'.
      • What does it show?
      • How does it relate to the what we are learning about today (title)?
    Think about PACE – Develop, consolidate and deepen knowledge, skills and understanding
    Teacher or Student lead? Differentiation and Challenge question/task
    Progress Check Extension
    Remember to give time to apply knowledge, skills and understanding
    Teacher or Student lead? Differentiation and Challenge question/task
    Progress Check Extension

    Teacher or Student lead? Differentiation and Challenge question/task
    Progress Check Extension

    Teacher or Student lead? Differentiation and Challenge question/task
    Progress Check Extension


    Plenary Differentiation and Challenge question/task
    • Students to answer the 'Key Questions' with learning partners.
    Progress Check
    • Teacher to reveal and discuss the answers to the questions.
    		 Extension
    • What have learnt about the 'Big Ideas' today?

    Homework Differentiation and Challenge question/task