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Explore how atoms join and what chemical formulas tell you.
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Understand pH, practice the reasoning, then put it to work in a game.
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Connect particles, mass, and amount with explanations and a calculator.
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Find your next resource
62 resources
- guideFree8 min read
Fireworks Chemistry: Every Color in the Sky
Fireworks are flame tests at full scale: strontium burns red, barium green, copper blue. The chemistry of firework colors, and the chemicals we retired.
- guideFree7 min read
The Best Interactive Periodic Table
Most interactive periodic tables are for looking elements up. On the best one for learning them, you recall each element, with games and spaced repetition.
- guideFree6 min read
What Every Element Looks Like
Most elements are silvery metal, but bromine is a liquid, cesium is gold, gallium melts in your hand, and bismuth grows rainbow crystals. A visual tour.
- 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.
- guideFree7 min read
How to Pass the Chemistry Regents in 2027
Is the Chemistry Regents hard? Students needed 50 of 85 raw points to pass recent legacy exams and 21 of 50 on the new one. A study plan for 2027.
- guideFree5 min read
Is High School Chemistry Hard?
Chemistry is harder than the courses before it, but the difficulty is specific and fixable: you work in three languages at once. How to make it easier.
- guideFree4 min read
Anki for High School Chemistry: The Catch
Anki is the best flashcard engine there is, and solo, blank, and dry, so a lot of high schoolers quit. Where it fits, and the game-based complement.
- guideFree5 min read
How to Help a Teen Struggling in Chemistry
A teen failing chemistry is usually just weeks behind on the basics. They can rebuild the foundation in short daily games, and you need no chemistry to help.
- 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.
- guideFree4 min read
How to Study Chemistry With Friends
Study chemistry with friends through head-to-head games in Bond Forge and Pt Paddle, or solve pH puzzles together in Acid Boy & Base Girl.
- guideFree4 min read
How to Study for a Chemistry Test
Understanding chemistry in class but freezing on the test means you studied the comfortable way. The fix is active recall across days, as a game.