iPad Screenshots


Discover the fundamental nature of matter; everything is made of atoms. The atomic theory is brought to life in "Atoms in Motion" -- a fully interactive atomistic simulation that uses sophisticated Molecular Dynamics (MD) algorithms to perform computational chemistry calculations right on your iPad. Such computations reveal the motions of atoms as they attract, repel, and collide with one another.

Fun for all ages -- in this simulation you control the atoms! With the tap of the finger you can add, delete, or highlight atoms within the simulation. With a gentle touch you can move, place, or throw atoms. With the swipe of a finger you can control the temperature and explore the states-of-matter (solids, liquids, and gases). Discover the physics behind the ideal gas laws, and perform your own experiments by changing the volume, the number of atoms in the simulation, or the temperature.

This Molecular Dynamics (MD) simulation includes realistic interatomic potentials of four noble gas elements: Helium, Neon, Argon, and Krypton (the van der Waals forces are computed using a Lennard-Jones 6-12 potential). The MD simulation continuously computes the pressure, and dynamically plots the pressure versus temperature, volume, or the number of atoms. Users can vary the temperature from near absolute zero to over 500K, and add up to 1,000 atoms to the simulation.

Enjoy the Atoms!

What’s New

Version 3.0

Updated for iOS 11

Ratings and Reviews

4.2 out of 5
10 Ratings
10 Ratings
Wykeham ,

Excellent for visualizing gas laws

Exceptional teaching tool for chemistry and physics.

Triboman72 ,

Great for kids, too

With a PhD in physics, I immediately appreciated the value of 'Atoms' as a tool for understanding energy and motion. I was surprised how my grandkids, from 5 and up, enjoyed playing with the screen, making more and more balls collide, raising the temperature and watching the chaos. There ability to control numbers and temperatures also made the 'game' an effective teaching tool (I believe). They saw relations between speed and size, speed and temperature, and even saw that the 'inert' atoms can bond at lowest temperatures. Terrific teaching tool and fun for kids.

442geo ,

Best Chemistry app ever!!!

If you are a chemistry teacher YOU HAVE TO GET THIS APP!!!!!


Atoms In Motion LLC
11.1 MB
Requires iOS 9.0 or later. Compatible with iPad.
Age Rating
Rated 4+
© 2017 Atoms In Motion LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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