Case study·Hard exam skill (4/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A student performs displacement tests shown in the figure.
Total: 6 marks
(a) From the first tube, compare the reactivity of zinc and iron. (1 mark)
(b) From the third tube, what can be inferred about copper and iron? (1 mark)
(c) Write the balanced equation for the second tube. (2 marks)
(d) Arrange Al, Zn, Fe and Cu in decreasing reactivity using the figure. (2 marks)
Something wrong with this item?