Locked · The chemistry lessons
The chemistry lessons opens with full access.
The games teach by doing. These pages spell out the why in writing.
One purchase opens everything in Periodic Mole that teaches chemistry: every game, all 118 elements, the lesson pages, and the review deck behind them. Topic practice opens as you finish each topic’s module. It covers a year, and nothing renews.
Buying creates your account, so there’s nothing to sign up for first. Once it’s set up, your first screen links back to The chemistry lessons.
Try it for 30 days. If it isn’t working out, one email to support@periodicmole.com and we refund it in full.
Already a member? Sign in.
Not the one paying? .
What opens
Every game, all 118 elements.
What one purchase is.
- Account
- Created at purchase. There is no free account to make.
- Term
- One year. Two years is $79. It ends on its own; nothing to cancel.
- Elements
- All 118, in every game and in review. Free play in Bond Forge and Pt Paddle stops at element 12.
- Review
- Spaced-repetition review behind the games, timed to bring each element back before it fades.
- Refund
- 30 days, in full, by email.
- Who pays
- Usually a parent. The note under the button says what this is and links back here.

Cobalt
“Twelve elements is a warm-up. I play with all 118.”
Not ready to buy? Bond Forge is free to play with a starter set of elements, no account needed. Play Bond Forge free.
Open all of it.
Try it for 30 days. If it isn’t working out, one email to support@periodicmole.com and we refund it in full.
Questions a parent asks
- Is this a subscription?
- No. One payment covers one year, or two years for $79. Nothing renews, and no card stays on file.
- What does it open?
- Every game, all 118 elements, the review deck behind them, and the lesson pages.
- What if it isn't helping?
- Email support@periodicmole.com within 30 days and we refund the full amount.
- Will it match the class?
- It covers general high-school chemistry, aligned to the NGSS chemistry standards. It is not tied to any one state's course or textbook.
- Can a brother or sister use it?
- One purchase is one account, and progress is per account. A second student needs a second purchase.






