Atomic Physics Crossword

3. Early atomic model where electrons were stuck inside a positively charged “sphere”
5. The wavelength where blackbody radiation is the strongest
9. Proposed the “plum pudding model” of the atom (electrons embedded in positive charge)
12. Scattering of X-rays by electrons, proving light has a particle behaviour
13. Electrons can only have certain allowed ___
16. Packet of light energy
17. Effect where light ejects electrons from a metal surface

1. Law connecting a blackbody’s peak wavelength to temperature
2. Discovered the nucleus using the gold foil experiment
4. Proposed that particles (like electrons) behave like waves
6. Experiment where alpha particles were fired at thin metal to test atomic structure
7. The simplest atom, used for Bohr’s model
8. Atomic energy model where energy increases continuously (not correct for atoms)
10. Small, dense, positively charged center of the atom
11. Minimum energy needed to eject an electron from a metal
14. Model that shows atomic energies are discrete “steps” (quantized)
15. Scientist who introduced quantized orbits for electrons in hydrogen
16. Constant used in photon energy and de Broglie wavelenth