Quelpr
3 marksPeriod 3: Sodium to Argon

CAPE Chemistry Unit 1 · May/June 2023 · Paper 2 · Question 3(a)(i)

Oxides of Period 3 elements.

In Table 3, write the formulae for the oxides of the elements in Period 3, excluding chlorine and argon.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)(ii)In Table 3, write the oxidation number for the element of EACH oxide in Period 3, excluding chlorine and argon.[3 marks]
  2. 3(a)(iii)Explain the nature and variation of the oxidation numbers for the elements in the oxides in Table 3.[2 marks]
  3. 3(b)Write the equation for the reaction between the oxide of phosphorus and cold water.[2 marks]
  4. 3(g)(i)Which of the halogens bring about the maximum change in oxidation number of sulfur?[1 mark]
  5. 3(g)(ii)Write ONE full ionic equation to represent this change.[1 mark]
  6. 3(h)(i)Identify element Z.[1 mark]
  7. 3(h)(ii)Explain the reaction taking place in EACH of the tests above. Include balanced equations in your explanation.[4 marks]

More practice: the rest of this paper · more Period 3: Sodium to Argon questions · all CAPE Chemistry Unit 1 past papers