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Learning objective

Explain that alkalis produce hydroxide ions, OH-, in aqueous solution.

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Topic

Reactions of acids

Subtopic

The pH scale and neutralisation

Aqa Gcse ChemistryChemical changes

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Quick explanation

Explain that alkalis produce hydroxide ions, OH-, in aqueous solution

  • This point belongs to Reactions of acids, especially The pH scale and neutralisation.
  • You need to be able to explain that alkalis produce hydroxide ions, OH-, in aqueous solution.
  • The key ideas to know are hydroxide ion and alkali.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

hydroxide ionalkali

Why it matters

This objective helps connect The pH scale and neutralisation to exam-style questions, flashcards, and revision notes for Reactions of acids.

Quick student answer

How do you explain alkalis produce hydroxide ions, OH-, in aqueous solution?

Direct answer

In Chemistry, this page helps you answer questions about alkalis produce hydroxide ions, OH-, in aqueous solution within Reactions of acids. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are alkali and hydroxide ion.

Key terms

  • alkali: A substance that produces hydroxide ions, OH-, in aqueous solution. In The pH scale and neutralisation, this term helps explain explain that alkalis produce hydroxide ions, OH-, in aqueous solution for AQA GCSE Chemistry 8462 Unit 4.4.
  • hydroxide ion: A negatively charged ion (OH-) formed when an alkali dissolves in water. In The pH scale and neutralisation, this term helps explain explain that alkalis produce hydroxide ions, OH-, in aqueous solution for AQA GCSE Chemistry 8462 Unit 4.4.

Common trap

Confusing Alkalis with Acids: Remember that alkalis produce hydroxide ions (OH-) in aqueous solution, while acids produce hydrogen ions (H+).

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