Build An Atom

Build An Atom is your digital sandbox for particle physics. Experiment freely by adding or removing protons, neutrons, and electrons to see immediate consequences. Discover what makes an atom stable versus radioactive, or how cations and anions form. The simulation models real scientific principles, allowing for endless experimentation without the cost or safety concerns of a physical lab. This exploratory approach encourages curiosity and deep conceptual understanding by letting you see the direct results of your atomic engineering choices.