logo

Exam-style practice

Experimental design answer explanations

Review worked answers and explanations for Experimental design. Aligned to Cambridge IGCSE Chemistry.

Answer explanations

Question 1 of 6

Review the answer support, then move sideways through the set.

Paper 6 structured question: Experimental design

Paper 6Alternative to PracticalPractical1 marks

Method

Method for Measuring Temperature Change

In a reaction between hydrochloric acid and sodium hydroxide, the temperature change is measured using a thermometer. The initial temperature of the acid is recorded before the sodium hydroxide is added. After mixing, the maximum temperature is recorded.

  1. a

    State the independent variable in this experiment.

    [1]