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7.1 Group 1

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Question 5
H

Sodium burns in chlorine gas to form sodium chloride, a white solid.

Relative atomic mass: Na = 23. The Avogadro constant is 6.02×1023mol−16.02 \times 10^{23} \mathrm{mol^{-1}}6.02×1023mol−1.

a.

Write the balanced equation for the reaction. Include state symbols.

[2]
b.

Explain, in terms of electrons, why sodium is oxidised in this reaction.

[2]
c.

Calculate the number of atoms in 0.23 g of sodium.

[2]
d.i.

Predict the formula of the compound formed when:

rubidium reacts with bromine.

[1]
d.ii.

potassium reacts with sulfur.

[1]
Markscheme

7.1 Group 1 Questions

  1. GCSE
  2. /Chemistry
  3. /7.1 Group 1

41 exam-style questions on Edexcel GCSE Chemistry 7.1 Group 1, covering 7.1.1 Classifying elements by group in the periodic table and 7.1.2 Properties and reactions of the alkali metals. Each one has a worked solution and a mark scheme showing where the marks go.

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