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Explain the reactions of potassium, sodium, and calcium with cold water; magnesium with steam; and the reactions of magnesium, zinc, iron, copper, silver, and gold with dilute hydrochloric acid, relating these reactions to their positions in the reactivity series.

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Explain the reactions of potassium, sodium, and calcium with cold water; magnesium with steam; and the reactions of magnesium, zinc, iron, copper, silver, and gold with dilute hydrochloric acid, relating these reactions to their positions in the reactivity series

This point belongs to Reactivity series, especially Reactivity series outcomes.
You need to be able to explain the reactions of potassium, sodium, and calcium with cold water; magnesium with steam; and the reactions of magnesium, zinc, iron, copper, silver, and gold with dilute hydrochloric acid, relating these reactions to their positions in the reactivity series.
The key ideas to know are Describe and Explain.
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DescribeExplain

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Paper 3 structured question: Reactivity series

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Description

Reactivity of Metals with Water and Acids

Consider the following metals: potassium, sodium, calcium, magnesium, zinc, iron, copper, silver, and gold. Describe their reactions with water and dilute hydrochloric acid.

a
State the products formed when potassium reacts with cold water.
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List the sequence of metals in the reactivity series, which includes potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, and gold.
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Infer the reactivity order of metals based on a provided set of experimental data.
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Discuss the relative reactivities of metals by examining their ability to form positive ions and their displacement reactions with the aqueous ions of magnesium, zinc, iron, copper, and silver.
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Clarify why aluminium appears unreactive by discussing the protective layer formed by its oxide.
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