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)3 marks

Understanding the properties of alkali metals is essential for predicting their behavior.

Description

Alkali metals are known for their low density, high reactivity, and formation of alkaline hydroxides.

a
Discuss the trend in melting points of Group I elements as you move down the group.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 3Theory (Core)1 marks

Description

As you move down Group I, the reactivity and atomic size of the elements increase while the melting points decrease.

a
State the trend in reactivity of Group I elements as you move down the group.
Your answer
Aim for approximately 1 distinct marking point.
[1]