Ready-to-teach AQA A Level lesson: write Kp expressions, work out units by cancelling, explain when Kp has none, and calculate Kp. Slides, sheets, answers.
Lesson 2 of an eight-lesson sequence on Kp. Pupils write Kp for any gas-phase equilibrium, find its units by cancelling the pressure terms, explain in one sentence why some Kp values have no units, and calculate Kp from mole fractions and the total pressure.
Two teaching cycles, each with a worked model, gap-fill, hinge question, completion problem, whiteboards and a timed independent task, plus a misconception probe on the belief that Kp’s unit is always kPa.
What’s included: a teacher PowerPoint with answers revealed on click and full speaker notes (timings, what to look for, what each wrong answer means); a pupil PowerPoint with the answers removed; a printable worksheet; a full answer document; and optional independent-study practice with answers. Everything is editable, set in Century Gothic, and every calculation is worked one step to a line.
Specification: AQA A Level Chemistry 7405, 3.1.10 Equilibrium constant Kp for homogeneous systems (A level only). Built for 55-minute lessons; adaptable to other boards that teach Kp.
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£4.00