Browse chemistry topics
Elements & the periodic table
Recognize elements, read the table, and connect chemistry to everyday life.
Read an explanation, try some practice, or explore through play. Choose the approach that helps you today.
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28 resources
- guideFree5 min read
Master the Periodic Table, Earn Real Money
The Element Mastery Prize is open June 12–Sept 15. Master all 118 elements and earn money: at least $25 for every kid who finishes, $250 for the fastest.
- guideFree4 min read
The Mole, Explained With a Carton of Eggs
A mole is the chemist’s counting word, like a dozen, and not a weight. Our egg analogy for molar mass, plus a free poster.
- guideFree4 min read
How to Memorize the Periodic Table Fast
What you cram is gone by Monday. To remember the table long-term, learn symbol-to-name for the core elements in short daily games, mnemonics as backup.
- guideFree5 min read
Periodic Table Games: What to Play
Choose a periodic table game for symbols, names, or timed recall. Compare free and paid options, see the questions, and try a short practice session.