record total charge too
🧫AP CHEMISTRY STUDY GUIDE
AP Chemistry Study Guide
A structured review of atomic structure, bonding, reactions, kinetics, equilibrium, acids, and thermodynamics.
8 key ideas8 flashcards5 practice questions
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Balance particles first, then calculate amounts.
coefficients only
matter and charge agree
Key ideas to know
Start with the relationships between ideas. Then close the notes and explain each one from memory.
- 01
Electron structure explains periodic trends and bonding.
- 02
Stoichiometry connects particle ratios to measurable amounts.
- 03
Kinetics describes reaction rates and mechanisms.
- 04
Equilibrium is dynamic and responds to altered conditions.
- 05
Thermodynamics predicts whether a process is energetically favorable.
- 06
Particle diagrams connect symbolic equations with conservation of atoms and charge.
- 07
Acid-base calculations require stoichiometry before equilibrium when a strong reagent reacts fully.
- 08
Electrochemical signs follow oxidation at the anode and reduction at the cathode.
PART OF THE AP CHEMISTRY GUIDE
See every set in this course and follow a focused review order.
Open the full AP Chemistry guide →Two ideas worth correcting now
NOT QUITE
→Every equilibrium mixture has equal reactant and product amounts
USE THIS INSTEAD
Equilibrium has equal forward and reverse rates, not equal concentrations.
NOT QUITE
→A catalyst alters the equilibrium constant
USE THIS INSTEAD
It speeds both directions without altering K at a fixed temperature.
Flashcards
Answer before opening each card. The effort to retrieve is part of the learning.
1What does Coulomb's law describe?Show answer ＋
The electrostatic force between charged particles.
2What is the limiting reactant?Show answer ＋
The reactant consumed first, which limits product formation.
3What changes an equilibrium constant?Show answer ＋
Temperature.
4What does a catalyst alter?Show answer ＋
The pathway and activation energy, not the equilibrium position.
5When is a process thermodynamically favorable?Show answer ＋
When its Gibbs free-energy change is negative under the stated conditions.
6What must a particle diagram conserve?Show answer ＋
Atom count, charge, and stated particle ratios.
7What should happen before a buffer equilibrium calculation after strong acid is added?Show answer ＋
Complete the stoichiometric reaction with the conjugate base.
8Where does oxidation occur in an electrochemical cell?Show answer ＋
At the anode.
Explain it in your own words
Use the answer as a check after you have written or spoken your response.
01Why does atomic radius generally decrease across a period?
Effective nuclear charge increases while electrons enter the same principal shell.
02How does a buffer resist pH shifts?
A weak acid-base pair consumes added acid or base.
03What evidence supports a proposed reaction mechanism?
Its elementary steps must sum to the net reaction and produce the observed rate law.
04How should a multi-unit AP Chemistry problem be checked?
Verify particle reasoning, equation choice, units, sign, and whether the result has a sensible scale.
05Why can a thermodynamically favorable reaction be slow?
Free energy predicts direction, while activation energy and mechanism determine rate.
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