UV–visible spectroscopy topic check
Practise H3 Chemistry chromophores, conjugation, Beer–Lambert calculations and quantitative analysis, then check your UV–visible reasoning.
Learning goals
- Relate electronic transitions and chromophores to UV/visible absorption
- Predict UV/visible absorption from a chromophore
- Explain conjugation, energy gaps and longer-wavelength absorption
- Use the Beer–Lambert law in concentration calculations
- Plan quantitative analysis using UV/visible spectroscopy
Your next step
Check what you know
Answer each question and say how sure you are to find what to practise next.
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Check what you know
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About 8 minutes
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About 10 minutes
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Paper instructions
This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you check each answer.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
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Recent attempts
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Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise after feedback
After a check, practise the skills it showed you need to work on.
About 10 minutes
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Paper instructions
This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you check each answer.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
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Recent attempts
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Beyond the syllabus: optional enrichment that does not count towards your progress.
Check your progress
When you feel ready, answer on your own to show what you can do.
About 10 minutes
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Paper instructions
Your result can count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you finish and submit.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Getting your questions…
Recent attempts
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Beyond the syllabus: optional enrichment that does not count towards your progress.
Check again
After practising what your progress check showed, check those skills again.
About 10 minutes
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Paper instructions
Your result can count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you finish and submit.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
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Recent attempts
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Review
Come back later to see whether your learning has lasted.
About 10 minutes
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Paper instructions
A scheduled review counts towards your course progress only when it is due.
- Question count is checked before you start.
- Feedback appears after you finish and submit.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise: multiple-choice
Practise questions on the skills you are learning.
About 10 minutes
Use the feedback to improve your answers; this practice does not count towards your progress.
Time is up and your answers could not be submitted; check your connection and try again.
Paper instructions
This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you check each answer.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Practice settings
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise: written
Practise questions on the skills you are learning.
About 10 minutes
Use the feedback to improve your answers; this practice does not count towards your progress.
Time is up and your answers could not be submitted; check your connection and try again.
Paper instructions
This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you check each answer.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Practice settings
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
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