Collisions® is a system of interconnected digital chemistry games designed to give middle and high school students a deepened understanding of fundamental chemistry concepts through play.

Currently available on iPad, Android tablets, and the web via subscription or try Atoms for free!

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WEB VERSION AVAILABLE FOR DESKTOP BROWSERS.

Filling atomic orbitals with electrons in the correct fill order to build an Si atom
Filling atomic orbitals with electrons in the correct fill order to build an Si atom

Atoms Game
Build a series of atoms of increasing radii by placing protons in the nucleus and electrons in atomic orbitals while discovering fill order.

Removing an electron from the outer orbital of Na atom to create Na+ cation

Ions Game
Form stable ions by attempting to add or remove electrons from any energy level while monitoring ionization energies.

Removing an electron from the outer orbital of Na atom to create Na+ cation
Bonding hydrogen atoms with oxygen to form an H2O molecule
Bonding hydrogen atoms with oxygen to form an H2O molecule

Covalent Bonding Game
Build molecules with target geometries by bonding atoms while exploring the relationship between electronegativity and bond polarity.

Bonding K cations with a P anion with correct ratio to form an ionic compound

Ionic Bonding Game
Build ionic compounds of specific target ratios using monatomic and polyatomic ions of various charges.

Bonding K cations with a P anion with correct ratio to form an ionic compound
Building a non-polar tetrahedral CF4 molecule to observe an LDF intermolecular force
Building a non-polar tetrahedral CF4 molecule to observe an LDF intermolecular force

IMFs Game
Create LDF’s, dipole-dipoles, and hydrogen bonds by using single atoms or bonding atoms to form polar and nonpolar molecules.

Removing hydrogen from HCl and donating the H to water to make hydronium H30+

Acids & Bases Game
Attempt to add and remove protons from acids and bases to create target ions & molecules while differentiating between strong and weak acids.

Removing hydrogen from HCl and donating the H to water to make hydronium H30+
Cause phase changes in target sequences by adding or removing energy to affect particle motion and to break and form intermolecular forces.
Cause phase changes in target sequences by adding or removing energy to affect particle motion and to break and form intermolecular forces.

Phase Change Game
Cause phase changes in target sequences by adding or removing energy to affect particle motion and to break and form intermolecular forces.

Developed with teachers in mind

Use Collisions your way
Designed as modular and interconnected spaces, Collisions can be used flexibly in a flipped classroom, to introduce a lesson, and for extra practice or homework.

Reach the entire class
Collisions couples immersive play with immediate and meaningful feedback to engage students of varying skill and interest levels.

Access meaningful data
Coming soon, a teacher portal will offer performance data to quickly identify students’ successes and challenges as well as their progress.

Free teacher resources

The Educator Quick Start Guides provide suggested classroom implementation ideas and sample questions for educators to ask as students play the game.

The Game Guides provide an overview of each Collisions content area and highlight the chemistry concepts integrated into the game.

The Student Quests are post-gameplay activities designed to extend student learning and draw connections between Collisions and the chemistry classroom.

The Student Activities are quick formative assessment activities that can be used to check student understand of key concepts covered during gameplay.

Reviews and awards