Required Practical: Investigating Temperature Changes (AQA GCSE Chemistry): Flashcards

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Required Practical: Investigating Temperature Changes
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Vol. of HCl used

25 cm3^3

Initial temp. of HCl

25°C

Container for reaction

Polystyrene cup

Mass of Mg powder added

1 g

Temp. measurement interval

Every 30 seconds

Duration of monitoring

5 minutes

Starting HCl conc.

0.2 g/dm3^3

HCl conc. increment

0.2 g/dm3^3

Max HCl conc. tested

1.0 g/dm3^3

Purpose of polystyrene cup

Minimise heat loss

Exothermic: temp. change

Increases (releases energy)

Endothermic: temp. change

Decreases (absorbs energy)

Extra insulation used

Cotton wool in beaker

What temp. to record

Highest temperature reached

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