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

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Required Practical: Investigating Temperature Changes
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Volume of HCl used in practical

25 cm325 \text{ cm}^3

Initial temperature acid heated to

25°C25°\text{C}

Mass of powdered Mg added

1 g1 \text{ g}

Container used in practical

Polystyrene cup

Purpose of polystyrene cup

Minimise heat loss to surroundings

Temperature measurement interval

Every 30 seconds

Duration of temperature monitoring

5 minutes

Concentration increment per repeat

0.2 g/dm30.2 \text{ g/dm}^3

Starting acid concentration

0.2 g/dm30.2 \text{ g/dm}^3

Maximum acid concentration

1.0 g/dm31.0 \text{ g/dm}^3

Exothermic reaction temp. change

Increases, releases energy

Endothermic reaction temp. change

Decreases, absorbs energy

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Exothermic & Endothermic Reactions

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Exothermic & Endothermic Reactions

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Exothermic & Endothermic Reactions

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Exothermic & Endothermic Reactions

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