Helium -- Element # 2 -- Has TWO Protons -- One of the Noble Gases

Alkali Metals - First Column in Periodic Table -- Lithium # 3 -- HAS Three Protons

Explore the Elements of the Periodic Table

Word Play and Quizzes

Simulations and Games

Halogens

Origins of Atoms

Chemistry Basics

ChemistryPlus: The Alphabet of the Universe -- Atoms (also called Elements)

What Does An Atom Look Like?

The Periodic Table of Elements

Periodic Table Songs: The common elements you encounter everyday.

Hydrogen -- Element # 1 -- Has ONE Proton

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