Edexcel IGCSE Chemistry Plan Investigations
Practise Edexcel IGCSE Chemistry devising and planning investigations by extending a method with different substances to test a deduction.
- Syllabus
- Issue 3 (2024)
- Course
- Chemistry 4CH1
Exam points
- Extend an investigation by repeating the method with different metal carbonates to test a deduction.
Devise and plan investigations question 1
A student uses this apparatus to investigate the effect of heat on different solid metal carbonates.
This is the student's method.
- use a spatula to put some metal carbonate in the boiling tube
- fit the delivery tube into position
- pour some limewater into the test tube
- start a timer and immediately begin to heat the metal carbonate
- record the time when a change first occurs in the limewater
The student repeats the method using different metal carbonates.
When a metal carbonate is heated a reaction sometimes occurs.
The equation for the reaction is
metal carbonate → metal oxide + carbon dioxide
State how you should extend the investigation to see if your deduction is correct.
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