One year
$59
Full access for twelve months. Every game and every concept page that helps your kid spend class learning chemistry, not feeling stupid because they don't know what Ruthenium is.
Pricing
$59 for a year. $79 for two.
About what one private tutor session costs.
No subscription, no renewal, no email three days before the card runs out.
30-day money-back guarantee
Paid plans
Two years
+ $20$79
Same access for twenty-four months. Built for an AP retake or college gen chem.
What your kid will learn
A mole is just a number. Six hundred two sextillion, give or take.
The mole is one of the core ideas in high-school chemistry. It shows up in unit one and never leaves. Your kid will use it to count atoms in a beaker, to balance an equation, to figure out how much salt is in a recipe. Here’s how Periodic Mole teaches it.
The mole is a count. Every pan below holds the same number of atoms — 6.022 × 10²³. The first frame introduces the lab tool; the other five each hold one mole. Watch what the mass reads.
Balance (empty)0 g
A balance is the chemistry-lab name for a precision scale. It reads mass in grams.
Carbon (C)12 g
Black graphite powder. The reference point.
Aluminum (Al)27 g
A small crumpled wad of kitchen foil.
Sulfur (S)32 g
Bright yellow powder — same count, ~2.7× the mass of carbon.
Iron (Fe)56 g
Dark gray filings — magnetic and metallic, ~4.7× carbon.
Lead (Pb)207 g
A small pile of dense gray pellets — same count, but 17× the mass.
The takeaway. The pile of lead and the pinch of carbon are the same count of atoms. The balance reads radically different numbers because every element has its own atomic mass. That’s the conversion the mole bridge handles for you: from a count (moles, what chemistry equations describe) to a mass (grams, what a balance tells you).
This is the kind of thing your kid will learn.
What you get
Every game shipped, every game shipping.
The full roster on /games today and everything that ships next. No "premium tier" you have to upgrade into.
Spaced-repetition deck.
About a hundred facts from the first-year curriculum, scheduled card by card so the algorithm pulls forward the ones your brain is about to lose.
All concept pages.
Periodic-table groups, polyatomic ions, chemical formulas, equation literacy, and the rest of the /learn topic atlas.
No ads. No data sold.
We charge for the product, so the product is the product. Nothing on the page is sponsored. Nothing leaves our database.
Reviewed by chemistry-education researchers.
Content is checked against TEKS and NGSS standards, with misconception traps drawn from the AAAS Project 2061 corpus.
Questions
- Why no subscription?
- High school chemistry is one year. A subscription that auto-renews when you forget to cancel is the move we explicitly didn't make. You buy access, you keep access, then it ends.
- What happens after the year ends?
- Your account stays. Your progress stays. New content stops appearing. If you want to come back for a college class, you can buy another window then.
- Will the price go up?
- Possibly, but your license is good for the duration without any additional fees.
- Can I share the account with my other kid?
- The account is bound to one phone number for sign-in. Mole General does not bend on this. Your other kid buys their own.
- 30-day refund, no questions?
- Yes. If it doesn't click for your kid in the first 30 days, email support@periodicmole.com and we refund. No survey, no exit form, no "how much did they use it" inquisition.
- Why is the two-year option only $20 more?
- Most students will only need this for one year. The two-year price is for parents who want a second year of runway in case their kid keeps studying.
Pick a year. Or pick two.
The clock starts the day you sign up. Until then, Bond Forge is free.
30-day refund, no questions