Chemistry, within reach
Find your way into chemistry.
A concept to understand, a test to prepare for, or a game to get lost in. Start with what you need today.
What would you like to do?
Search all resources- Understand a topic Find explanations, games, and practice for the chemistry you’re learning.
- Practice for a test Check your recall or prepare for the Chemistry Regents.
- Play a chemistry game Choose a game by the chemistry you want to practice.
- Find a classroom activity Teaching guides, printables, and activities to use with your class.
- Help my teen Find a starting point and resources you can explore together.
Looking something up? Open the periodic table.
Browse by topic
- Elements & the periodic table →
Recognize elements, read the table, and connect chemistry to everyday life.
- Atoms, bonds & compounds →
Explore how atoms join and what chemical formulas tell you.
- Acids, bases & pH →
Understand pH, practice the reasoning, then put it to work in a game.
- Moles & calculations →
Connect particles, mass, and amount with explanations and a calculator.
- Study skills & exam preparation →
Find a starting point, practice recall, and prepare for the Chemistry Regents.
Find your next resource
62 resources
- guideFree8 min read
Chemistry Regents Reference Tables 2011/2025
The 2011 Chemistry Reference Tables are 12 pages; the 2025 edition is 4. The edition for each exam through June 2027, what NYSED cut, and where NYSED put it.
- guideFree12 min read
Greenland Shark Lifespan: How Do We Know?
Greenland sharks can live at least 272 years. Scientists put the largest at 272 to 512 from the carbon-14 in its eye and its length. How sure is that?
- guideFree15 min read
How Accurate Is Carbon Dating?
Scientists can carbon-date things up to 50,000 years old, usually to a 120–200 year range at 95% confidence. How it works, its limits, famous cases.
- guideFree5 min read
Online Chemistry Games to Play in a Browser
Play seven online chemistry games in a browser. Bond Forge and Pt Paddle are free for 12 elements, Acid Boy & Base Girl for two missions, no account.
- guideFree7 min read
Acid Boy & Base Girl: The pH Game
Acid Boy & Base Girl is a 3D pH game: two heroes, nine rooms, real substances on the pH scale. The first two missions are free in your browser.
- guideFree6 min read
Chemistry Games for High School
Pick a chemistry game for elements, formulas, molecular shapes, or balancing equations. Includes free options and classroom challenges with answers.
- guideFree6 min read
How To Use A Blank Periodic Table
Use a blank periodic table for symbols, groups, and periods. Free worksheet PDFs, a completed chart, and classroom exercises with an answer key.
- guideFree5 min read
Bond Forge: Chemistry Dots and Boxes
Play chemistry dots and boxes on a 3D forge table: answer to draw bonds, close boxes, and challenge Cobalt or a friend. Free starter elements.
- guideFree5 min read
Element Symbols: Chemistry's Times Tables
Math has a named fact layer parents watch for. Chemistry has one too, still unnamed: element symbols either become automatic or cost attention on every line.
- guideFree5 min read
Is Competition Good for Learning?
A teacher’s blunt words about racing to recite times tables, what researchers found testing competition, and a design that is safe for slower starters.
- guideFree5 min read
Is Game-Based Learning Effective? 34 Studies
A meta-analysis of 34 chemistry studies, a six-school experiment on the periodic table, and the answer kids give when researchers ask what helps them learn.
- guideFree5 min read
Should Students Memorize the Periodic Table?
The chart on the wall is a scaffold for some things and a crutch for others. What researchers found students should memorize, look up, and drill under a timer.