Free Chemistry Resources

Free Chemistry Resources, Articles, Tips & Study Guides

Everything from AP exam prep strategies to concept breakdowns. Free for every student.

AP Chemistry, Featured

How to Study for the AP Chemistry Exam: A Complete 30-Day Plan

The AP Chemistry exam covers 18 major topics, 3 hours of testing, and years of concepts compressed into a single morning. Here's exactly how to prepare, week by week.
AP Chemistry, Featured

How to Study for the AP Chemistry Exam: A Complete 30-Day Plan

The AP Chemistry exam covers 18 major topics, 3 hours of testing, and years of...
General Chemistry

How to Balance Chemical Equations: 3 Methods That Work

Master the skill every chemistry student needs, no more guessing on which atoms go where....
General Chemistry

What Is Stoichiometry? The Complete Beginner’s Guide

Stoichiometry is the math of chemistry. Here's everything you need to understand it from scratch....
AP Chemistry

Le Chatelier’s Principle Explained with Real Examples

One of the most tested AP topics, finally explained in plain English with real-world analogies....
General Chemistry

Gas Laws Explained: Boyle, Charles, and the Ideal Gas Law

Pressure, volume, temperature, understand how they relate and when to use each formula....
AP Chemistry

The 10 Hardest AP Chemistry Topics, And How to Tackle Each

Equilibrium, buffers, electrochemistry... know which topics need the most of your study time....

Free Downloads

Study Guides, Yours to Keep

Downloadable reference sheets for every major topic. Free for registered users.

AP Chem Unit Summaries

One-page overview of all 18 units

Stoichiometry Checklist

Never miss a step again

Periodic Trends Reference

Electronegativity, atomic radius & more

Acid-Base Quick Reference

Ka, pKa, pH, buffers, all in one place