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4 marksGroup II Elements

CAPE Chemistry Unit 1 · May/June 2025 · Paper 2 · Question 3(e)

Some compounds of aluminium, calcium and magnesium have various uses.

For any TWO of the metals, complete the following table by naming ONE compound of the metal and the use of the compound.

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Other parts of this question

  1. 3(a)(i)Describe the trend in EACH of the following: Electrical conductivity from silicon to lead [2 marks] The melting point from silicon to lead [2 marks][4 marks]
  2. 3(a)(ii)Account for the variation in melting points from C(d) to Sn, in terms of structure and bonding.[4 marks]
  3. 3(b)(i)Describe the reaction of lead (IV) chloride with water.[1 mark]
  4. 3(b)(ii)Write a balanced equation for the reaction described in (b)(i).[2 marks]
  5. 3(c)(i)State the trend in EACH of the following from beryllium to barium: Density [1 mark] Atomic radii [1 mark][2 marks]
  6. 3(c)(ii)Account for the trend in the atomic radii in terms of the nuclear charge and the screening effect.[3 marks]
  7. 3(d)(i)Complete the table below by recording the observations that would be made when a 1 molar (M) solution of sodium sulfate is added to 0.1 mol dm^-3 of each of…[4 marks]
  8. 3(d)(ii)Account for the observations in (d)(i).[4 marks]
  9. 3(d)(iii)Write the ionic equation for the reaction between the barium ion, Ba2+ and the 1 M sodium sulfate solution.[2 marks]

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