Kinetics
Eleven topics on how fast reactions go and why. Reaction rates and the rate laws found from experiment, how concentration changes over time, the collision model and energy profiles behind a reaction, the step-by-step mechanisms that set the rate law, and how a catalyst speeds things up.
Equations For every problem in this unit
60 open-ended problems.
Read the question, work it out, then flip the card to compare your reasoning to the worked solution. Mark each card so you can return to the ones that still bite.
Switch to All, work through some cards, and tag them as Got it or Revisit.
Test the unit.
Twenty mixed items pulled from across all 11 topics. Identifies which misconceptions still bite when you cannot see which topic the question came from.
Check what stuck.
Units 1 through 5, drawn evenly so earlier units get the same share as this one. Twenty questions or a full 60-question section, your choice. Even coverage means this is a retention check rather than a score estimate.