Gridlocks are a fun way to learn the facts you need in Chemistry. The puzzles here are for 11-14 year olds and designed to work in the same way as Su Doku, Gridlocks combine chemistry and puzzles to help learn about chemistry topics. The top selection are interactive and can be played online, the rest can be printed off and done in class or for homework.

Gridlocks walkthrough

A short video explaining how to complete Gridlocks puzzles.