Cambridge IGCSE Chemistry practice

Paper 3 structured question: Group I properties

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Paper

Marks

Topic

Group I properties

Exam-style question

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Paper 3Theory (Core)1 marks

Alkali metals are known for their unique properties.

Description

Lithium, sodium, and potassium are soft metals that react with water.

a
State the trend in melting points of alkali metals as you move down the group.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)2 marks

Description

The alkali metals include lithium, sodium, and potassium. They are known for their softness and reactivity.

a
Explain the trends in density and reactivity of alkali metals as you move down the group.
Your answer
Aim for approximately 2 distinct marking points.
[2]