Percent Increase and Decrease Quiz
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AP Chemistry Unit 8 Worksheet | Acids, Bases, and Buffers | Stimulus Set + Key
Unit 8 is the highest-frequency FRQ topic on the AP exam — it appears every single year. The two skills that separate 4s from 5s: weak acid pH with ICE table, and explaining why equivalence point pH ≠ 7.00.Covers pH calculations with conductivity prediction, weak acid ICE tables with percent dissociation, quadratic pH solutions (no small-x), conjugate base hydrolysis, Henderson-Hasselbalch buffers with strong acid addition, and a complete 4-point weak acid titration. The stimulus set compares ti
9th - 12th, Higher Education
Chemistry
AP Chemistry Unit 4 Worksheet | Chemical Reactions | Stimulus Set
Net ionic equations and limiting reactant calculations appear on the AP exam every year.Covers redox analysis with oxidation state tracking (permanganate + HCl), half-reaction balancing in acidic solution, stoichiometry with limiting reactants and percent yield (thermite and aspirin), and hydrate analysis. The stimulus set presents a 4-trial PbI₂ precipitation experiment — students write the net ionic equation, calculate theoretical yield and percent yield, and explain why different trials produ
9th - 12th, Higher Education
Chemistry
TED Talk: A plan to recycle the unrecyclable- Ashton Cofer
This engaging TED Talk companion resource explores environmental science, innovation, and the role of perseverance in the scientific process through a real-world student success story. Students analyze how Styrofoam waste was transformed into activated carbon while examining broader themes of sustainability, failure, and problem-solving. What’s included: 20 high school/college-level discussion questionsA clear, expanded essay promptA fully scaffolded essay prompt with sentence startersA structur
9th - 12th, Adult Education, Higher Education
Chemistry, Engineering, Environment
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