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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Reactivity series

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Reactivity series

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Paper 3Theory (Core)2 marks

Reactivity of Metals with Water and Acids

Description

Reactivity Series

The reactivity series ranks metals based on their reactivity with water and acids. Potassium, sodium, and calcium are at the top, while copper, silver, and gold are at the bottom.

  1. a

    Explain the reactions of potassium and sodium with cold water.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Reactivity series

Paper 3Theory (Core)3 marks

Description

Metal Reactions with Hydrochloric Acid

Metals such as magnesium, zinc, and iron react with dilute hydrochloric acid to produce hydrogen gas and metal chlorides. Copper, silver, and gold do not react with dilute acids.

  1. a

    Describe the reaction of magnesium with dilute hydrochloric acid.

    Aim for approximately 3 distinct marking points.

    [3]