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Atomic Structure

Hand writing chemical equations

Chemical Equations


Learn about how to write and balance chemical equations.

Heating a liquid over a flame in a lab

Types of Chemical Reactions


Learn about the four main types of chemical reactions.

Periodic Table with molecular model

Introduction to the Periodic Table of the Elements


Learn about the elements of the periodic table and how they are organized.

Cloud model of an atom

Introduction to the Atom


Learn about the parts of an atom and its history.

Cube overflowing with spheres representing particles

Introduction to the Particle Theory of Matter


Learn about how the Particle Theory helps us understand matter.

Casting hot iron

What Causes Hot Things to Glow?

STEM Explained

Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.

The newest chemical elements

The Newest Elements on the Periodic Table

STEM Explained

The periodic table was last updated in 2016 with four new chemical elements. What is a chemical element? What is the atomic structure of the newest chemical elements? How did they get their names?