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When solid ammonium chloride is shaken with water, a colourless solution forms and the temperature changes from 20°C to 16°C - Edexcel - GCSE Chemistry - Question 6 - 2016 - Paper 1

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When solid ammonium chloride is shaken with water, a colourless solution forms and the temperature changes from 20°C to 16°C. Give the name of the type of heat chan... show full transcript

Worked Solution & Example Answer:When solid ammonium chloride is shaken with water, a colourless solution forms and the temperature changes from 20°C to 16°C - Edexcel - GCSE Chemistry - Question 6 - 2016 - Paper 1

Step 1

Give the name of the type of heat change occurring.

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Answer

The type of heat change occurring when solid ammonium chloride is dissolved in water is called 'endothermic reaction', as the solution absorbs heat from the surroundings, resulting in a drop in temperature.

Step 2

State a suitable container for the iron(II) sulfate solution in this experiment.

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Answer

A suitable container for the iron(II) sulfate solution would be a beaker or a conical flask, as these allow for easy measurement and mixing of liquids.

Step 3

State what the student should do to the mixtures during the experiment.

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Answer

The student should gently stir the mixtures after adding the metals to ensure uniform distribution of the reactants and accurate temperature readings.

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