9701 · topic questions

Periodicity of chemical properties of the elements in Period 3

Chemistry4 questions

4 past-paper questions on Periodicity of chemical properties of the elements in Period 3

9701/23 · May/June 20254 marks
Two different reagents are each added to separate samples of W as shown in Table 5.1. Complete Table 5.1.
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9701/22 · October/November 20242 marks
Write equations for the following reactions. • sodium and oxygen • sulfur and oxygen
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9701/22 · October/November 20242 marks
The maximum oxidation state of the Period 3 elements in their oxides varies across the period. State and explain the variation.
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9701/23 · May/June 20242 marks
Write an equation for the reaction of each oxide with an excess of NaOH(aq) at room temperature. Al2O3 + P4O10 +
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Worked example

What a lost mark actually looks like

This answer reaches the right coordinates and still drops a mark — the conclusion is stated, but never justified. Examiners pay for the reasoning, not the answer.

MARKED

80%

Strong

M1dy/dx = 3x^2 - 12x + 9M1 earned
M1(x - 1) $(x - 3) = 0$ M1 earned
A1 $x = 1$ or $x = 3$ A1 earned
B1(1, 5) is a maximum and (3, 1) is a minimumB1 not earned

B1 — withheld
You stated the nature of each point correctly, but stated it without justification. This mark needs the reasoning shown — either evaluate the second derivative (d²y/dx² = 6x − 12, giving −6 at $x = 1$ and +6 at $x = 3$ ) or show a sign change of dy/dx either side of each point. An unsupported assertion earns nothing here even when the conclusion is right.

Periodicity of chemical properties of the elements in Period 3 (9701) past-paper questions — marked instantly

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How many Periodicity of chemical properties of the elements in Period 3 questions are there for 9701?: This page collects 4 recent Cambridge Chemistry (9701) past-paper questions tagged to Periodicity of chemical properties of the elements in Period 3. Each links straight to instant marking against the official 9701 scheme.
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