About Reaction Lab

Titrate acids and bases to hit the target pH in this free online acid base chemistry game about neutralization.

Reaction Lab models real laboratory chemistry where molecules undergo collision kinetics, activation energy thresholds and acid-base neutralization. In every chemical synthesis, reactants must collide with sufficient kinetic energy and correct geometric orientation to break existing chemical bonds and forge new products.

The game simulates the Bronsted-Lowry acid-base framework where acids donate protons (H+) and bases donate hydroxide ions (OH-), forming water molecules and ionic crystalline salts. Universal indicators provide visual feedback by changing conjugated double bond structures across the pH spectrum, while exothermic reactions release thermal enthalpy that requires active cooling regulation.

Understanding reaction rates and thermodynamic control is essential in industrial chemistry, pharmaceutical drug synthesis and environmental protection. Catalysts accelerate these transformations without stoichiometric depletion, enabling efficient manufacturing while preventing dangerous thermal runaways in pressurized chemical reactors.

Key Science Concepts

• Acid-Base Neutralization (H+ and OH- forming H2O)
• The pH Scale and Universal Dye Indicators
• Activation Energy and Catalytic Acceleration
• Exothermic Enthalpy and Thermal Runaway Prevention
• Precipitation Reactions and Insoluble Salt Crystallization

What You Learn

• How to balance reagent concentrations to achieve neutral pH 7.0
• How temperature influences molecular collision rates and vessel pressure
• The role of catalysts in lowering reaction energy barriers
• Techniques for stabilizing rapid exothermic chemical reactions

Grade Level: Middle School, High School, Introductory Chemistry

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How to play

1. Slide Your Flask Move mouse or drag finger left and right to steer your beaker across the bench.
2. Catch Raining Acid Catch raining red acid droplets to decrease pH when your solution is too alkaline.
3. Catch Raining Base Catch raining blue base droplets to increase pH when your solution is too acidic.
4. Dodge Boil Hazards Avoid falling runaway bubbles or tap them in mid-air to prevent chamber damage.
5. Harvest Crystals Catch raining golden precipitate crystals and catalyst stars for massive points.
6. Regulate Thermal Energy Hold Burner to heat up or tap Ice Bath to cool down when reaction boils.

Frequently asked questions

Is Reaction Lab free to play?

Yes. Reaction Lab is completely free to play in your browser. There is no download, install or account needed.

What grade level is Reaction Lab for?

Reaction Lab is designed for Middle School, High School, Introductory Chemistry students and works well as a classroom activity or homework.

Does Reaction Lab work on phones and tablets?

Yes. Reaction Lab runs in any modern browser on desktop computers, Chromebooks, tablets and phones in landscape mode.

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