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Cambridge IGCSE Chemistry practice

Paper 6 structured question: Reactivity series

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Reactivity series

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Paper 6Alternative to PracticalPractical1 marks

Investigating the reactivity of metals with hydrochloric acid.

Method

Metal Reactivity Experiment

In this experiment, different metals are reacted with hydrochloric acid to observe the rate of hydrogen gas production.

MetalTime for gas production (s)Observations
Magnesium10Rapid bubbling
Zinc20Moderate bubbling
CopperNo reactionNo gas produced
  1. a

    State the independent variable in this experiment.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 6 structured question: Reactivity series

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Results Table

Reactivity of Metals with Hydrochloric Acid

The table below shows the results of the experiment.

MetalGas produced (ml)Reaction time (s)
Sodium505
Calcium4010
Iron2030
Copper0N/A
  1. a

    Explain the trend in gas production observed in the table.

    Aim for approximately 3 distinct marking points.

    [3]