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4.1 Predicting chemical reactions

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Question 16

Three metals, P, Q and R, are in Group 2. P is above Q, and R is below Q. Equal masses of P and Q, with the same surface area, are separately added to equal volumes of water at the same temperature.

The volume of hydrogen produced in the first minute is measured. The results are shown in the table.

MetalVolume of hydrogen produced in the first minute (cm³)
P0.4
Q1.8

Using the results in the table and your knowledge of electron arrangements, predict how R is likely to react with water compared with Q. Explain your prediction.

[3]
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4.1 Predicting chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /4.1 Predicting chemical reactions

113 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.

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