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Edexcel IGCSE Chemistry Communicate Experimental Findings Questions

Practise Edexcel IGCSE Chemistry communicating experimental findings by drawing best-fit curves through plotted reaction data.

Syllabus
Issue 3 (2024)
Course
Chemistry 4CH1

Exam points

  • Draw a curve of best fit through plotted points from a practical chemistry investigation.
  • Shape a best-fit curve so it starts correctly and levels off where the reaction data plateaus.

Edexcel IGCSE Chemistry Communicate Experimental Findings Questions question 1

[Maximum number: 1]

A student uses this apparatus to investigate the decomposition of hydrogen peroxide solution.

Figure for Question Edexcel IGCSE Chemistry Communicate Experimental Findings Questions question 1 — Edexcel IGCSE Chemistry

This is the equation for the reaction.

2H2O2→2H2O+O22 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}

The student measures the volume of oxygen collected at regular intervals until the reaction stops.

The table shows the student's results.

Table for Question Edexcel IGCSE Chemistry Communicate Experimental Findings Questions question 1 — Edexcel IGCSE Chemistry

Draw a curve of best fit.

Figure for Question Edexcel IGCSE Chemistry Communicate Experimental Findings Questions question 1 — Edexcel IGCSE Chemistry
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