How Lumini helps with A-Level Chemistry
You're looking at an AQA or OCR A-Level Chemistry past paper on your Mac. Question 3 is a 6-mark organic synthesis question — you need to propose a two-step synthesis from an alcohol to an amine, including reagents, conditions, and the mechanism. You've drawn the structures but you're not confident about the curly arrows or the intermediate.
Lumini sees your hand-drawn or ChemDraw mechanism on screen. Hold Ctrl+Option and ask "Are my curly arrows correct?" Lumini looks at each arrow: "Your first arrow shows the lone pair on nitrogen attacking the carbon — that's correct. But your second arrow showing the bromide leaving — the arrow should start from the C-Br bond, not from the bromine atom. Curly arrows always start from a bond or a lone pair, never from an atom. I'm pointing at the incorrect arrow now."
Mechanisms are worth half the organic chemistry marks
Organic mechanisms account for a huge portion of A-Level Chemistry marks. Lumini checks all four things examiners look for: correct curly arrows, correct intermediate structures, correct charges on intermediates, and correct reagents with conditions. "You drew the carbocation intermediate correctly but forgot to show the positive charge. Even if your final answer is right, you'll lose a mark for the intermediate. Always put charges on intermediates — the examiner is specifically looking for them."
For NMR spectroscopy questions — the one that separates A from A* students — Lumini sees the spectrum on your screen and walks through the analysis: "The peak at 2.1 ppm with integration of 3H means you have a CH3 group next to a carbonyl. The quartet at 4.1 ppm with integration of 2H is a CH2 next to an oxygen. Put those together and you get an ethyl ester. I'm pointing at each peak and its corresponding proton environment."
The required practicals
A-Level Chemistry has 12 required practicals and questions about them appear on every paper. Lumini helps you recall the specifics: "This question is about Practical 10 — preparation of an organic solid. You need to mention recrystallisation for purification, using a minimum volume of hot solvent, and cooling in ice to maximise yield. Also mention measuring melting point to check purity — a sharp melting point indicates a pure compound."
Example questions to ask Lumini
- "Are my curly arrows correct and starting from the right place?"
- "What does this NMR peak correspond to in the structure?"
- "What reagents and conditions do I need for this conversion?"
- "Is my mechanism SN1 or SN2 — how can I tell?"
- "What's the colour change for this redox titration?"
How Lumini automates your Chemistry revision
Say "Create a note with all the organic reaction conditions." Say "Remind me to do Paper 2 at 10am tomorrow." Say "Search the web for AQA A-Level Chemistry 2026 predicted topics." All while staying on your past paper.