| 1. Drag the Hydrogen tube to the Gas Lamp Socket. | |
| 2. Add energy levels for an electron in the energy diagram. | |
| 3. Move an energy level on the left side. | |
| 4. Create a transition between two energy levels by dragging on the right. | |
| 5. Pull down the arrow until it reaches a lower energy level. | |
| 6. Move one of the energies with a transition. Watch the spectra change as the energy level changes. | |
| 7. Try to match the Hydrogen spectra shown. |
