Chemistry A-Level
Curly-arrow conventions and intermediates
What Curly-arrow conventions and intermediates means in Chemistry A-Level, as defined for OCR.
Definition of Curly-arrow conventions and intermediates
Check what you remember
Read the wording for your board, then hide it and explain Curly-arrow conventions and intermediates in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The alkoxide intermediate is shown with an arrow from the nucleophile's lone pair to the carbonyl carbon and an arrow from the C=O π bond onto the oxygen, then protonated.
Topics that use Curly-arrow conventions and intermediates
- Carbonyl compounds (OCR A-Level)
Related terms
- 2,4-dinitrophenylhydrazine test
- 2,4-dinitrophenylhydrazone
- Acidified dichromate(VI) as oxidising agent
- acidified potassium dichromate(VI)
- Aldehyde versus ketone distinction
- Carbon–carbon bond formation
- Carbonyl group confirmation
- Carbonyl group detection
Using Curly-arrow conventions and intermediates in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Chemistry A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge