This resource is designed to accompany students notes, texts, and other instructional resources and provide a means to review what they have learned about atomic structure and counting atoms in compounds.

I love this activity, and I think it is a great instructional resource for students to learn about atomic structure and counting atoms in compounds.  However, I would like to add a single modification.MODIFICATION:  Add the following question: How are atoms of one element different from the atoms of  a different element?   This resource is designed to accompany students notes, texts, and other instructional resources and provide a means to review what they have learned about atomic structure and counting atoms in compounds.

Calculating electron energy for levels n=1 to 3. Drawing a shell model diagram and an energy diagram for hydrogen, and then using the diagrams to calculate the energy required to excite an electron between different energy levels. Created by Jay.

Using classical physics to calculate the energy of electrons in Bohr model. Solving for energy of ground state and more generally for level n. Created by Jay

Using equation for Bohr model radii to draw shell model for n=1 to 3, and calculating the velocity of a ground state electron. Created by Jay

Using classical physics and vectors, plus assumption that angular momentum of electron is quantized, to derive the equation for Bohr model radii. Created by Jay.

Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!

How did scientists figure out the structure of atoms without looking at them? Try out different models by shooting light at the atom. Check how the prediction of the model matches the experimental results.