Edexcel IGCSE Chemistry Safe Experimental Methods

Edexcel IGCSE Chemistry Safe Experimental Methods
Edexcel IGCSE Chemistry syllabusChemistry 4CH1Issue 3 (2024)

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

How this is tested

  • 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.

Question 7(a)(i)

[Maximum number: 1]

A student uses this apparatus to investigate the rate of reaction between dilute sulfuric acid and an excess of small pieces of zinc.

Figure for Question 7(a)(i) — Edexcel IGCSE Chemistry

This is the student's method.
Step 1 use 50 cm350 \mathrm{~cm}^{3} of dilute sulfuric acid
Step 2 add approximately 5 g of small zinc pieces to the sulfuric acid
Step 3 quickly connect the gas syringe
Step 4 record the reading on the gas syringe every 30 seconds until the reaction stops

Name a suitable piece of apparatus to measure the volume of sulfuric acid.