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4.1.1 Acids, alkalis and the pH scale
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The ions supplied by acids and alkalis

The ions supplied by acids and alkalis

An acid is a substance that supplies hydrogen ions, H+\text{H}^{+}H+, when it dissolves in water. These ions make the solution acidic.

4.1.1 Acids, alkalis and the pH scale Lesson

  1. GCSE
  2. /Chemistry
  3. /4.1.1 Acids, alkalis and the pH scale

Step-by-step lessons on Edexcel GCSE Chemistry 4.1.1 Acids, alkalis and the pH scale. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

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