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7.1 Group 1

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Question 2
F

The table shows the melting points of some alkali metals.

Alkali metalMelting point / °C
lithium181
sodium98
potassium63
rubidium39
caesium
a.

Describe the trend in the melting points of the alkali metals down the group.

[1]
b.

Predict the melting point of caesium.

[1]
c.

Give two physical properties of alkali metals that are different from most other metals.

[2]
d.

A freshly cut piece of lithium is shiny but it quickly goes dull. Explain why.

[2]
e.

Balance the equation for the reaction: ...... Li+O2→\mathrm{Li} + \mathrm{O_{2}} \rightarrowLi+O2​→ ...... Li2O\mathrm{Li_{2}O}Li2​O

[1]
f.

Give one safety precaution a teacher should take when cutting a piece of lithium.

[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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