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Edexcel IGCSE Chemistry 1.9 Pure Substances and Mixtures Questions

Practise using melting and boiling point evidence to decide whether a substance is pure or a mixture and predict impurity effects.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • use fixed or ranged melting and boiling points to classify pure substances and mixtures
  • predict how an impurity changes a melting point result or boiling range

Edexcel IGCSE Chemistry 1.9 Pure Substances and Mixtures Questions question 1

[Maximum number: 3]

A student has two solids, X and Y .

One of these solids is a pure substance and the other is a mixture.
Describe how the student could identify which solid is pure and which is a mixture by measuring a physical property of each solid.

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