The unit in one line
Chemistry as it is actually done and used: the plants that make things by the tonne, what every named substance is for, and the polymers, drugs and fertilisers behind ordinary life. 3 of Chemistry's 50 questions over three chapters, and almost all of them pure recall.
Read in this order
- Chemical industry and manufacturing processes (12 min) — the named processes with their raw materials, catalyst, conditions and key reaction, plus cement and paper, and the vocabulary of running a plant.
- Applications of non-metals, metals and compounds (9 min) — one long table of substance against use, with the trade names that get confused.
- Chemistry in service to mankind (10 min) — polymers, dyes, drugs, pesticides, fertilisers, colloids, and the chemistry behind a saline drip.
About 30 minutes in all. Read chapter 1 after Chemical equilibrium: every condition those plants run at is Le Chatelier traded against rate and cost.
How it is asked
MEC sets the paper roughly half recall, a third understanding and a fifth application, but this unit is the recall end of it: which catalyst, which trade name, which substance is used for what. Understanding is why a process runs at the pressure it does, or why an anhydride is used industrially where an acid chloride would work. Application, when it comes, is a described symptom or use worked back to the compound.
Then practise
Each chapter has a fixed-length chapter test under Practice › Topics, drawn from questions written to that chapter's scope. Sit it after reading; a second sitting a week later shows whether it stuck.