Skip to content

Group 2 and halogens test with answers for A Level chemistry (free PDF download)

  • by

Quick answer: Group 2 metals are reactive metals that lose two outer electrons to form 2+ ions, and their reactivity rises down the group. This Chemistry 11-12 test on group 2 and halogens has 8 questions worth 20 marks, to do in 45 minutes: calcium and water, ionisation energy trend and testing for sulfate. The mark scheme is on a separate page; free printable PDF.

Group 2 and halogens test with answers for A Level chemistry (free PDF download)

Also, this test covers the reactions and trends of group 2 and the halogens, with explanation and calculation. Answer all questions, show your working and include units. Then, you have 45 minutes and the test is worth 20 marks.

Level: Chemistry grades 11-12 (A Level · IB · Class 11-12) · Curriculum: A Level 3.2.2-3.2.3

Time: 45 minutes · 8 questions · Total: 20 marks · Calculator allowed

Question 1 Calcium and water (2 marks)

  1. Describe two observations when calcium is added to cold water. (2 marks)

Question 2 Ionisation energy trend (2 marks)

Bar chart of first ionisation energies for magnesium 738, calcium 590 and barium 503 kilojoules per mole02505007501000First ionisation energy (kJ mol⁻¹)Mg738Ca590Ba503
First ionisation energies of three group 2 metals.
  1. Also, use the figure to explain why barium is more reactive than magnesium. (2 marks)

Question 3 Testing for sulfate (3 marks)

  1. In addition, describe how to test a solution for sulfate ions and give the positive result. (2 marks)
  2. Write the ionic equation. (1 mark)

Question 4 Magnesium and acid (2 marks)

  1. Afterwards, calculate the volume of hydrogen (24.0 dm³ mol⁻¹) from 2.43 g of magnesium (Ar = 24.3) and excess hydrochloric acid. (2 marks)

Question 5 Halogen displacement (2 marks)

  1. Predict what is seen when bromine water is added to potassium iodide solution and write the ionic equation. (2 marks)

Question 6 Trend in boiling points (2 marks)

  1. Explain why the boiling point of bromine (59 °C) is higher than that of chlorine (−34 °C). (2 marks)

Question 7 Making bleach (3 marks)

  1. Moreover, chlorine reacts with cold dilute sodium hydroxide: Cl₂ + 2NaOH → NaCl + NaClO + H₂O. In addition, give the oxidation states of chlorine in Cl₂, NaCl and NaClO. (1 mark)
  2. Also, explain why this is disproportionation. (2 marks)

Question 8 Limewater concentration (4 marks)

  1. 25.0 cm³ of saturated calcium hydroxide solution needs 20.00 cm³ of 0.0500 mol dm⁻³ hydrochloric acid. Write the equation. (1 mark)
  2. Then, calculate the concentration of the calcium hydroxide in mol dm⁻³. (2 marks)
  3. Calculate the solubility in g dm⁻³ (Mr = 74.1). (1 mark)

See the group 2 and halogens test answers and mark scheme

Physics and chemistry textbooks to download in PDF, from grade 6 to AP Physics and AP Chemistry

Follow us