Students explore the forces acting on a pair of charged particles. They can adjust the charge on each ion and move the ions to see the force acting between them.
This resource allows students to practice drawing Lewis structures, or dot diagrams, of molecules and ions. Students count the number of valence electrons, then draw the bonds between atoms and the electrons.
Students drag symbols for bonds and electron lone pairs to build a Lewis structure of a molecule. The simulation tells them when they have it right, or tells them to go back and try again if the structure is not correct.
Students explore how the quantity of a radioactive isotope changes over time as it decays. They choose one of four radioactive isotopes and simulate the passage of time. The amount remaining is displayed graphically and numerically.
This interactive simulation explores the relationship between solubility and the solubility product constant (Ksp) and the number of ions into which a salt dissociates. Students run a simulation showing concentrations of ions dissolving into solution and concentrations of ions before and after the dissolution.