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The newest 20 of 55 written questions, plus 113 multiple-choice. Open one to see it on the real paper.
- 9701/22 · October/November 2025 · Q2b[2]
Fig. 2.1 shows the variation in melting point of the Period 3 elements Si to Cl. 1800 1600 1400 melting point / K 1000 800 600 400 200 0 Si P S Cl 1200 The Period 3 elements Si to Cl are all non-metals. Explain why there is a large difference between the melting point of Si and the melting points of P, S and Cl. Fig. 2...
See it on the paper → - 9701/23 · October/November 2025 · Q2a(i)[2]
Explain the trend shown in the atomic radii of the Period 3 elements Na to Cl . (i)
See it on the paper → - 9701/23 · October/November 2025 · Q2a(ii)[2]
Explain why there is a large difference in the ionic radii of Al and P. (ii)
See it on the paper → - 9701/23 · October/November 2025 · Q2b(i)[2]
Complete Table 2.1.
See it on the paper → - 9701/23 · October/November 2025 · Q2b(ii)[1]
State why there is no data given in row B for Al 2 O 3 and SiO 2 .
See it on the paper → - 9701/22 · May/June 2025 · Q1c(ii)[1]
Identify the formula of a Period 3 oxide that is amphoteric.
See it on the paper → - 9701/23 · May/June 2025 · Q2a[1]
A Period 3 oxide produces a solution with a pH greater than 10 when it is added to water. State the formula of the oxide.
See it on the paper → - 9701/22 · October/November 2024 · Q2a(iii)[1]
The maximum oxidation state of the Period 3 elements in their oxides varies across the period. State and explain the variation.
See it on the paper → - 9701/22 · October/November 2024 · Q2b(i)[2]
Complete Table 2.1 to give details of the reactions of some Period 3 oxides with H 2 O. Table 2.1 Period 3 oxide product of reaction with H 2 O pH of solution formed Mg(OH) 2 P 4 O 10
See it on the paper → - 9701/22 · October/November 2024 · Q2c(i)[1]
Explain the trend in the boiling points of the Group 16 hydrides H 2 S to H 2 Te.
See it on the paper → - 9701/22 · October/November 2024 · Q2c(ii)[1]
Explain why the boiling point of H 2 O is much higher than that of H 2 S.
See it on the paper → - 9701/22 · October/November 2024 · Q3a(i)[1]
Identify one natural and one man-made occurrence of nitrogen oxides in the atmosphere. natural
See it on the paper → - 9701/22 · October/November 2024 · Q3d[2]
Complete Table 3.1 to show the properties of nitrogen and phosphorus in their standard states. Table 3.1 state and appearance of standard state nitrogen phosphorus colourless gas white solid electrical conductivity poor type of bonding type of structure simple
See it on the paper → - 9701/42 · October/November 2024 · Q3a(i)[2]
Show that the concentration of hydroxide ions in a saturated solution of calcium hydroxide is 0.0224 mol dm –3 at 298 K.
See it on the paper → - 9701/42 · October/November 2024 · Q3a(ii)[3]
Use data given in (i) to calculate the solubility product, K sp , of calcium hydroxide at 298 K. Include the units of K sp in your answer. K sp = units (ii)
See it on the paper → - 9701/42 · October/November 2024 · Q3a(iii)[3]
A spatula measure of solid calcium chloride is stirred into a sample of saturated calcium hydroxide solution. All of the calcium chloride dissolves. Describe one other observation that would be made and give an estimated value of the pH of the solution obtained. Explain both your answers. observation pH of solution exp...
See it on the paper → - 9701/22 · May/June 2024 · Q1a[2]
Complete Table 1.1 using relevant information from the Periodic Table. Table 1.1 nucleon number Mg 2+ 24 Al 3+ 27 proton number number of electrons
See it on the paper → - 9701/22 · May/June 2024 · Q1d(ii)[2]
2-mark question — its maths and diagrams are best seen on the paper.
See it on the paper → - 9701/22 · May/June 2024 · Q1e(i)[2]
Complete Table 1.2. Table 1.2 1 2 3 Period 3 element state of oxide at room temperature and pressure approximate pH of solution made when oxide is added to water Na S
See it on the paper → - 9701/23 · May/June 2024 · Q1a(i)[2]
Explain the lack of reactivity of nitrogen gas, N 2 (g).
See it on the paper →
What examiners said
Most candidates were able to complete the table to show the number of electrons in the 3p subshells of P, S and Cl, as 3, 4 and 5 respectively. The total number of unpaired electrons in these elements proved challenging for some candidates, Common incorrect answers were 1, 0 and 1 respectively.
— Examiner report, October/November 2023, 9701/21 Q1(a)(i) (Cambridge)
Some candidates gave the formulae of nitrates of elements that are not located in Period 3.
— Examiner report, May/June 2023, 9701/23 Q2(b) (Cambridge)
This was generally answered well. The most common error was to state that glu and ala-glu go towards the negative electrode.
— Examiner report, May/June 2023, 9701/41 Q7(d) (Cambridge)
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