4.2.4

Reactions with Water

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Reactions of Reactive Metals with Water

Potassium, sodium and lithium all react quickly with cold water to produce a metal hydroxide and hydrogen gas.

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Potassium

  • Potassium is the most reactive so reacts very quickly.
  • The hydrogen produced ignites instantly and the metal also sets alight, sparking and burning with a lilac flame.
Illustrative background for SodiumIllustrative background for Sodium ?? "content

Sodium

  • Sodium fizzes rapidly and melts to form a ball that moves around on the water surface.
Illustrative background for LithiumIllustrative background for Lithium ?? "content

Lithium

  • Lithium fizzes steadily and floats, becoming smaller until it eventually disappears.

Jump to other topics

1Atomic Structure

2Chemical Bonding

3Quantitative Chemistry

4Chemical Changes

5Energy Changes

6The Rate & Extent of Chemical Change

7Organic Chemistry

8Chemical Analysis

9Chemistry of the Atmosphere

10Using Resources

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