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Chemistry Basics
Core chemistry concepts explained plainly — atoms, bonds, moles, and reaction types, tied to the Science Lab tools
Chemistry Basics Articles
The Five Types of Chemical Reactions
Nearly every reaction you'll encounter in an intro chemistry course fits one of five recognizable patterns. Here's how to spot each one.
Why Do Chemical Equations Need to Be Balanced?
A chemical equation isn't "correct" until the same number of each atom appears on both sides — here's the physical law behind that rule.
The Mole and Avogadro's Number: Why Chemists Count in Moles
Atoms are far too small and numerous to count one at a time — the mole is the unit chemists invented to solve that problem.
Ionic vs. Covalent Bonds: What's the Difference?
Atoms bond in two fundamentally different ways — by giving away electrons or by sharing them. Here's how to tell which is which.
What Is an Atom? The Basics of Atomic Structure
Every element on the periodic table is made of atoms — here's what's actually inside one, and how to read the Science Lab's Atom Viewer.
