Build an Atom

Build an Atom

Atom Building Simulation

Description

Numbers on the periodic table feel abstract, so how do protons, neutrons and electrons set an element and a charge? Build an Atom lets you drop particles in one by one, and adding a single proton immediately renames the element, while adding electrons makes an ion.

Symbol and game screens test your grasp of mass number and charge, which suits classroom practice.

Features



Add particles one by one: Drag in protons, neutrons and electrons and the atom updates.

Element identification: The current element, mass number and net charge are shown.

Stability hints: See whether the nucleus is stable and learn about isotopes.

Single-file offline use: One HTML file that opens in any browser, no connection needed.