Learning objective

Recognize that solutions of acids contain positive hydrogen ions and solutions of alkalis contain negative hydroxide ions.

Read the explanation, check the common trap, then practise with flashcards and questions.

Practise this topic Read the exam answer Topic hub

Exam focus

Read the explanation.
Check key terms.
Practise with linked questions.

Cambridge IGCSE ChemistryAcids, bases and saltsCore content

Study support

Understand this objective

Quick explanation

Recognize that solutions of acids contain positive hydrogen ions and solutions of alkalis contain negative hydroxide ions

This point belongs to The characteristic properties of acids and bases, especially The characteristic properties of acids and bases outcomes.
You need to be able to recognize that solutions of acids contain positive hydrogen ions and solutions of alkalis contain negative hydroxide ions.
The key ideas to know are State.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect The characteristic properties of acids and bases outcomes to exam-style questions, flashcards, and revision notes for The characteristic properties of acids and bases.

Revision tools