Percent Increase and Decrease Quiz
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Programs & methods
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
AP Chemistry Unit 2 Worksheet | Molecular & Ionic Compound Structure | Stimulus
Lewis structures and VSEPR are the two most-tested subtopics in Unit 2 and the most common source of lost FRQ points.Covers Lewis structures (including expanded octets and formal charge), VSEPR geometry and polarity, MO theory for O₂ species, and hybridization from measured bond angles. The stimulus set presents bond angle data for CH₄, NH₃, H₂O, BF₃, and SF₄ — students explain compression trends and equatorial lone pair preference.This worksheet is part of the AP Chemistry Unit Worksheets serie
9th - 12th, Higher Education
Chemistry
MYP Grade 7 Science | Chemistry in Practice | Audio Revision Activity | Sub Plan
⚡Grade 7 Science Audio Summary: Chemistry In Practice - Applications - Revision Activity⚡What's In This Resource:An engaging podcast-style audio summary covering real-world chemistry applications including water treatment, separation techniques, alloys, composites, and chemical testsStudent review sheet with QR code linking directly to the audioMYP command terms practice - Questions progress from basic recall (Define, Identify) through higher-order thinking (Compare, Explain, Evaluate)Complete a
7th
Chemistry, General Science
IB DP Sciences | Internal Assessment IA | Writing the Evaluation 2026
IB DP Science IA Evaluation Writing GuideA straight forward guide to help students write the evaluation section for their Internal Assessment. What it is: A writing guide for Criterion D (Evaluation) Focuses on identifying weaknesses and explaining their impact Includes examples for Biology, Chemistry, and Physics What is included: Templates for writing evaluation paragraphs Example evaluations showing a high standard Sentence starters and key terminology Editable document for student use W
11th - 12th
Biology, Chemistry, Physics
MYP Grade 7 Science | Chemistry Units | Audio Revision with Worksheets Bundle
⚡Grade 7 Science Audio Summary: Chemistry Curriculum Bundle - Full Year Package with MYP Integration⚡What's In This Bundle:12 engaging podcast-style audio summaries covering the entire Grade 7 Chemistry curriculum across three major units12 student worksheets/review sheets with QR codes for instant audio accessComplete MYP command terms integration throughout all materials12 detailed answer keys with model responses for every question typeEach audio runs 15-20 minutes, perfect for class periods
7th
Biology, Chemistry, General Science
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