Learning objective
Explain why barium sulfate can be used in medicine despite barium compounds often being toxic.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Flashcards
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Questions
Topic
Group 2, the alkaline earth metals
Subtopic
Group 2 applications
Study support
Understand this objective
Quick explanation
Explain why barium sulfate can be used in medicine despite barium compounds often being toxic
- This point belongs to Group 2, the alkaline earth metals, especially Group 2 applications.
- You need to be able to explain why barium sulfate can be used in medicine despite barium compounds often being toxic.
- The key ideas to know are barium sulfate.
- 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 Group 2 applications to exam-style questions, flashcards, and revision notes for Group 2, the alkaline earth metals.
Quick student answer
Which of the following statements correctly explains why barium sulfate is safe for use in medical imaging?
Direct answer
B. Barium sulfate is insoluble in water, preventing it from being absorbed into the bloodstream.
Key terms
- Insoluble: A substance that does not dissolve in a solvent, such as water.
- Radiocontrast agent: A substance used in medical imaging to enhance the contrast of structures or fluids within the body.
Common trap
Confusing solubility with toxicity: Understand that barium sulfate is safe due to its insolubility, while other soluble barium compounds can be harmful.
Related questions
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Flashcard prompts
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Revision tools
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Flashcards0 linked cards
Practice Questions0 linked questions
Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Explain trends in atomic radius and first ionisation energy down Group 2.
Group 2 trends and reactions
- Describe reactions of Group 2 metals with oxygen, water and acids.
Group 2 trends and reactions
- Explain the trend in reactivity down Group 2.
Group 2 trends and reactions
- Explain trends in solubility of Group 2 hydroxides and sulfates.
Group 2 trends and reactions
- Explain uses of magnesium hydroxide and calcium carbonate in neutralising acidity.
Group 2 applications