Pick a unit and take a timed, AP®-style test built only from that unit's questions — with AI feedback on every free-response answer.
Thermodynamics
Two ways to practice unit 9
The exam experience, sized to one unit — timed like the real thing
20 Multiple Choice Questions
40 min
1 FRQ – FRQ 1 – Mathematical Routines
24 min
1 FRQ – FRQ 2 – Translation Between Representations
24 min
Sections run back-to-back with the same directions, timers, and scoring as the real exam
Total: 1 hr 28 min
Pick your own mix of question types
multiple choice questions
20
free response questions (choose as many as you want)
Total: 40 min
How scoring works: multiple choice is scored instantly, free-response answers get point-by-point AI feedback, and your result is a percentage for this unit — not a projected AP® score.
Ready for the real thing?
take a full-length practice exam