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1.3 Properties of transition metals

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Question 16

A chemist investigates a reaction that produces a gas.

The chemist measures the time taken to collect 100 cm³ of gas. The same quantities of reactants are used under the same conditions in each experiment. Solid T is a compound containing a transition metal. The chemist recovers and dries all of solid T after each experiment.

ExperimentUse of solid TTime to collect 100 cm³ of gas in sMass of solid T before the experiment in gMass of solid T recovered in g
1No solid T used208––
2Fresh solid T522.402.40
3Solid T recovered from Experiment 2542.402.40

Explain why the results support the conclusion that solid T is a catalyst.

[2]
Markscheme

1.3 Properties of transition metals Questions

  1. GCSE
  2. /Chemistry
  3. /1.3 Properties of transition metals

91 exam-style questions on AQA GCSE Chemistry 1.3 Properties of transition metals, covering 1.3.1 Comparison with Group 1 elements and 1.3.2 Typical properties of transition metals. Each one has a worked solution and a mark scheme showing where the marks go.

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