Edexcel IGCSE Chemistry 2.50 pure water test
Practise pure-water test questions by describing boiling point or freezing point measurements and linking them to purity.
- Syllabus
- First assessment 2019
- Course
- Chemistry 4CH1
Exam points
- Describe measuring boiling point and linking pure water to 100 °C at standard pressure.
- Use freezing point as an alternative physical test, with pure water at 0 °C.
2.50 Water purity test question 1
This question is about apparatus used in the laboratory.
The diagram shows apparatus used to obtain pure water from sodium chloride solution by simple distillation.
Describe a physical test to show that the liquid in the conical flask is pure water.
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