Browse chemistry topics
Acids, bases & pH
Understand pH, practice the reasoning, then put it to work in a game.
Read an explanation, try some practice, or explore through play. Choose the approach that helps you today.
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12 resources
- practiceFree pH module; paid exam preparation
Chemistry Regents preparation
Start with the free pH module and explore the exam preparation options.
- guideFree, no account
Learn acids, bases & pH
Work through the free lesson and check your understanding.
- practiceFree
pH night-before practice
Review pH reasoning before your test.
- Classroom materialsFree
Teach acids, bases & pH
Open the teaching guide, student handout, and classroom slide.
- gameFree starter play
Acid Boy & Base Girl
Two heroes. Five rooms. Read the pH scale, test each tile with the right hero, and neutralize a solution to open the way through.
- 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.
- 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.
- 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
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.
- guideFree6 min read
The Science Behind Periodic Mole
We built our chemistry games on published research: game-based learning, spacing, per-fact practice doses. And we say what we refuse to claim.
- guideFree7 min read
Chemistry Apps for Teachers
Students drill chemistry fluency in our mastery-gated games; you keep class time for reasoning and phenomena. Free full access for chemistry teachers.