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Science at key stage 3    (Year 9)

Unit 9F: Patterns of reactivity
Section 7: Checking progress

QCA

Objectives
Children should learn:
  • how an activity series can help to make sense of the reactions of metals
  • how an activity series can be used to make predictions
  • that sometimes the data doesn't enable firm predictions/conclusions to be made

Activities

Outcomes
Children:
  • Provide pupils with an activity series of metals (including some that they haven't tested, eg aluminium, lead, silver) and help them make a summary sheet showing reactions of the metals.
  • Tell pupils the position in a series of an unknown metal and ask them to predict its reactions. Give pupils information about the reactions of metals not already in the series and ask them to predict where they might come.
  • Discuss with pupils any difficulties in coming to decisions.
  • summarise reactions of metals, making use of patterns in the reactivity series
  • use the activity series to make predictions about the reactions of metals
  • identify where an element cannot be given a position or where a firm prediction cannot be made, giving reasons for the difficulty

Points to note
  • Extension: some pupils could be given quantitative data.

Sections in this unit

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This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.
1. Why do metals tarnish?
2. How do metals react with water?
3. Is the order of reactivity of metals with water the same as that with acids?
4. Can we make predictions about the reactions of metals with oxygen?
5. a. Can metals displace each other?
6. b. Can metals displace each other?
7. Checking progress
8. How does the activity series relate to uses and sources of metals?
9. How can we find out more about the reaction of metals with acids?
10. Reviewing work