Browse chemistry topics
Study skills & exam preparation
Find a starting point, practice recall, and prepare for the Chemistry Regents.
Read an explanation, try some practice, or explore through play. Choose the approach that helps you today.
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32 resources
- practiceFree
Periodic table quiz
Check which element names and symbols you can recall.
- referenceFree
The Element Miss List
Find commonly confused elements and focus your practice.
- practiceFree pH module; paid exam preparation
Chemistry Regents preparation
Start with the free pH module and explore the exam preparation options.
- practiceFree
pH night-before practice
Review pH reasoning before your test.
- guideFree guide
Help your teen get started
Understand how the games and practice fit into learning chemistry.
- guideFree5 min read
Get Ahead in Chemistry Before Class Starts
The best head start for high-school chemistry: learn the periodic table before class. Ten minutes a day of summer games, and your kid walks in fluent.
- guideFree10 min read
Acids, Bases, and pH: A High School Guide
An acid gives up a proton and a base takes one. pH is the number for how acidic a water solution is: below 7 acidic, 7 neutral at 25 °C, above 7 basic.
- guideFree7 min read
Chemistry Regents Curve: Raw Score for a 65
Is there a Chemistry Regents curve? Not in the grading sense: students needed 50 of 85 raw points for a 65 at every legacy sitting since August 2024.
- 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.
- 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.