Learning objective
Recall chlorine, ozone and ultraviolet light as sterilising methods for potable water.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Using the Earth's resources and obtaining potable water
Subtopic
Potable water
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Quick explanation
Recall chlorine, ozone and ultraviolet light as sterilising methods for potable water
- This point belongs to Using the Earth's resources and obtaining potable water, especially Potable water.
- You need to be able to recall chlorine, ozone and ultraviolet light as sterilising methods for potable water.
- The key ideas to know are sterilising, chlorine, and ozone.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Potable water to exam-style questions, flashcards, and revision notes for Using the Earth's resources and obtaining potable water.
Quick student answer
What should you know about chlorine, ozone and ultraviolet light as sterilising methods for potable water?
Direct answer
In Chemistry, this page helps you answer questions about chlorine, ozone and ultraviolet light as sterilising methods for potable water within Using the Earth's resources and obtaining potable water. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are potable water and sterilising methods.
Key terms
- potable water: In Potable water, potable water means water that is safe to drink. This matters in Using the Earth's resources and obtaining potable water because it supports the learning objective to recall chlorine, ozone and ultraviolet light as sterilising methods for potable water. Use potable water only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.
- sterilising methods: Techniques such as chlorine, ozone, and ultraviolet light used to make water safe for consumption.
Common trap
Confusing Sterilisation Methods: Remember that chlorine and ozone are chemical methods that disinfect water, while ultraviolet light is a physical method that kills microbes without adding chemicals.
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Revision notestopic notes
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Open revision notesRelated learning objectives
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Using the Earth's resources and sustainable development
- Distinguish finite resources from renewable resources using given information.
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Using the Earth's resources and sustainable development