Edexcel IGCSE Chemistry Safe and Appropriate Experimental Methods Questions

Practise Edexcel IGCSE Chemistry safe experimental methods by choosing apparatus, preventing splashes and explaining safety precautions.

Exam points

Name suitable apparatus such as a conical flask or measuring cylinder for a practical method.
Explain containment choices such as a lid or cotton wool to reduce loss or splashing.
Link safety precautions to hazards, such as toxic chlorine, corrosive acid or flammable liquids.

[Maximum number: 1]

Methanol, ethanol, propanol and butanol are alcohols. They are all liquids that evaporate easily when warmed.

A student uses this apparatus to compare the time taken for the four liquids to evaporate.

Figure for Question Edexcel IGCSE Chemistry Safe and Appropriate Experimental Methods Questions question 1 — Edexcel IGCSE Chemistry

She uses this method.
- pour some methanol into an evaporating basin
- place the evaporating basin on top of a beaker containing hot water
- measure the time taken for the methanol to evaporate completely
- repeat the experiment with each of the other alcohols, using the same apparatus

State why it is not safe to heat the evaporating basin directly with a Bunsen flame.

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Edexcel IGCSE Chemistry Safe and Appropriate Experimental Methods Questions question 1