Learning objective
Link Group 2 solubility trends to applications.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
5
Flashcards
7
Questions
Topic
Group 2, the alkaline earth metals
Subtopic
Group 2 applications
Study support
Understand this objective
Short explanation
In the subtopic Group 2 applications, this AQA A-Level Chemistry 7405 learning objective focuses on link Group 2 solubility trends to applications. It belongs to Group 2, the alkaline earth metals, so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include link, group, solubility, trends, applications. Group 2 applications. means practical uses of Group 2 compounds, such as their role in medicine and neutralising acidity Avoid the mistake of students often confuse the solubility trends of Group 2 hydroxides and sulfates, incorrectly stating that both increase or decrease uniformly down the group; instead, to clarify, remember that the solubility of Group 2 hydroxides increases down the group, while the solubility of sulfates decreases. Use this rule: 'Hydroxides are more soluble as you go down, sulfates are less soluble.' For exam answers, link the solubility of Group 2 hydroxides and sulfates to their practical applications by studying their trends
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.
Common mistakes
1 linked- Misunderstanding Solubility Trends: To clarify, remember that the solubility of Group 2 hydroxides increases down the group, while the solubility of sulfates decreases. Use this rule: 'Hydroxides are more soluble as you go down, sulfates are less soluble.'
Revision tools
Choose how to practise
Flashcards5 linked cards
Flashcard 1 of 5
Practice Questions7 linked questions
Question 1 of 7
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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 why barium sulfate can be used in medicine despite barium compounds often being toxic.
Group 2 applications
