AP Chemistry Sprint

Make every equation explain particles.

AP Chemistry rewards students who can move between particle models, balanced reactions, quantitative setup, lab evidence, and thermodynamic reasoning. This sprint makes students name the chemical idea before they calculate.

Readiness

100%

High-yield units

U3, U8

FRQ types

Long Response, Short Response, Lab Design, Particle Explanation, Quantitative Analysis

Start AP Chem PracticeScore AP Chem FRQ

What happens next

  1. Run a short set that mixes atomic structure, bonding, reactions, kinetics, equilibrium, acids and bases, and thermodynamics.
  2. Score the missing move: setup, units, particle explanation, data evidence, or justification.
  3. Save the update so the parent sees the chemistry skill that actually changed.

This module helps students repair quantitative setup, particle reasoning, data evidence, and lab-design leaks. Own AP Chem repair: make students name the chemical model, particle behavior, equation setup, units, data evidence, and parent-readable proof.

First scored move

Long Response

A student mixes two aqueous ionic solutions and observes a precipitate. Write a response that identifies the limiting reactant, explains the particle-level reason a precipitate forms, and states what evidence would confirm the reaction went to completion.

Balanced relationship

Limiting reactant setup

Particle-level precipitate explanation

Evidence named

Units or mole language

63 AP Chem simulator questions plus 7 FRQ prompts are live.

Unit map

U1

8%

Atomic Structure and Properties

Explaining periodic trends with memorized direction only.

Next move

Explain one periodic trend using attraction between electrons and the nucleus.

Companion proof: Complete one practice set for Atomic Structure and Properties, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U2

8%

Compound Structure and Properties

Drawing a Lewis structure without checking formal charge.

Next move

Draw one resonance structure and justify the best contributor.

Companion proof: Complete one practice set for Compound Structure and Properties, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U3

20%

Properties of Substances and Mixtures

Calling every strong intermolecular attraction hydrogen bonding.

Next move

Rank three substances by boiling point and explain the particle attraction.

Companion proof: Complete one practice set for Properties of Substances and Mixtures, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U4

8%

Chemical Reactions

Using coefficients without first balancing the equation.

Next move

Solve one limiting-reactant problem and state the species that runs out.

Companion proof: Complete one practice set for Chemical Reactions, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U5

9%

Kinetics

Using coefficients as orders without experimental evidence.

Next move

Do a 12-minute initial rates drill.

Companion proof: Complete one practice set for Kinetics, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U6

8%

Thermochemistry

Losing the sign of heat transfer.

Next move

Track system versus surroundings in one calorimetry problem.

Companion proof: Complete one practice set for Thermochemistry, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U7

8%

Equilibrium

Treating a large K as a fast reaction.

Next move

Set up one ICE table and explain the meaning of K.

Companion proof: Complete one equilibrium prompt and highlight Q/K comparison, direction of shift, and particle-level explanation.

U8

13%

Acids and Bases

Using strong-acid shortcuts on weak-acid problems.

Next move

Classify the acid/base system before calculating pH.

Companion proof: Complete one practice set for Acids and Bases, then save a parent update that names the missed concept, the corrected move, and the next unit check.

U9

8%

Thermodynamics and Electrochemistry

Calling a thermodynamically favored process fast.

Next move

Use delta G, K, and E cell in one connected explanation.

Companion proof: Complete one practice set for Thermodynamics and Electrochemistry, then save a parent update that names the missed concept, the corrected move, and the next unit check.