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MDCAT Prep · Chemistry · Quick Reference
Lesson 11 — Chemistry MCQ Sprint Cheat Sheet
In one line: The twelve facts this sprint keeps testing — atomic trends, functional groups/reactions, and equilibrium/Le Chatelier's principle.
Fast Recall
1Atomic number = number of protons.
2Atomic radius decreases across a period, increases down a group.
3Ionisation energy decreases down a group.
4-CHO = aldehyde; -COOH = carboxylic acid.
5Alkenes undergo addition reactions (C=C double bond).
6Secondary alcohols oxidise to ketones (not further).
More Fast Recall
7At equilibrium, forward rate = reverse rate (concentrations constant, not equal).
8Kc >> 1 means products are strongly favoured.
9Higher pressure shifts a gas equilibrium toward fewer moles.
10Catalysts speed both directions equally — no equilibrium shift, no Kc change.
11Haber process favours high pressure for higher NH3 yield.