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Learning objective

Explain why carbon monoxide is toxic because it reduces the ability of blood to carry oxygen.

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Topic

Common atmospheric pollutants and their sources

Subtopic

Properties and effects of atmospheric pollutants

Aqa Gcse ChemistryChemistry of the atmosphere

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Quick explanation

Explain why carbon monoxide is toxic because it reduces the ability of blood to carry oxygen

  • This point belongs to Common atmospheric pollutants and their sources, especially Properties and effects of atmospheric pollutants.
  • You need to be able to explain why carbon monoxide is toxic because it reduces the ability of blood to carry oxygen.
  • The key ideas to know are carbon monoxide and toxic.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

carbon monoxidetoxic

Why it matters

This objective helps connect Properties and effects of atmospheric pollutants to exam-style questions, flashcards, and revision notes for Common atmospheric pollutants and their sources.

Quick student answer

How do you explain carbon monoxide is toxic because it reduces the ability of blood to carry oxygen?

Direct answer

In Chemistry, this page helps you answer questions about carbon monoxide is toxic because it reduces the ability of blood to carry oxygen within Common atmospheric pollutants and their sources. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are carbon monoxide and toxic.

Key terms

  • carbon monoxide: A toxic gas produced by incomplete combustion that reduces the ability of blood to carry oxygen.
  • toxic: In Properties and effects of atmospheric pollutants, toxic means referring to substances that can cause harm or damage to living organisms. This matters in Common atmospheric pollutants and their sources because it supports the learning objective to explain why carbon monoxide is toxic because it reduces the ability of blood to carry oxygen. Use toxic 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.

Common trap

Misunderstanding Carbon Monoxide Toxicity: Clarify that carbon monoxide binds to hemoglobin in red blood cells, reducing their ability to carry oxygen, which is the reason for its toxicity.

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Question 1

Why is carbon monoxide considered toxic?

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