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Topic plan · A-Level Physics 9702 · Topic 15

Ideal gases

The mole, Avogadro's constant, and the gas equations pV = nRT and pV = NkT. The kinetic theory derivation that turns pressure into a statement about molecular motion.

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Unit at a glance

3 lessons, 135 minutes of teaching

Lessons
3, each planned for 45 minutes
Worksheets
3 with answer keys
Quiz questions
0 multiple-choice, assignable in the app
Lab
Ideal gases
Scheme of work

The lessons in order

RefLesson packStructureWorksheetQuizLab tab
15.1The mole
A mole is simply a count: a fixed, huge number of particles.		Corners4 Q, 45 marks (topic)4 checkstab 1
15.2The equation of state
A single relation ties pressure, volume and temperature for a fixed amount of ideal gas.		Frayer Model7 Q, 79 marks (topic)4 checkstab 2
15.3Kinetic theory of gases
Kinetic theory explains the large-scale gas laws from the random motion of molecules.		Connect-Extend-Challenge4 Q, 47 marks (topic)4 checkstab 3

Each pack holds the plan, worksheet and quiz for its lesson. Teach the rows in order; the lab tabs match the student lessons.

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Topic resources

Topic labFull-screen simulation Revision notesOne page per lesson Notes PDFPrintable topic notes Concept mapThe topic on one sheet Student syllabus pageIdeal gases Practical trainerGraph trainer Practical trainerResults tables Practical trainerUncertainties and evaluation Practical trainerPlanning an experiment Practical trainerQuestion 1 set-up builders Practical trainerLog graphs and error bars