Atomic Theory
Across
- 4. the surrounding orbits of an atom that electrons can jump to.
- 6. Performed the Gold Foil Experiment.
- 7. Proposed the modern atomic theory.
- 10. A subatomic particle with no electric charge.
- 12. The number of protons in the nucleus of an atom.
- 14. The tiny dense center of an atom.
- 15. The amount of mass in an atom.
- 17. A substance that is made up of two or more bonded elements
- 18. The overall charge of an atom.
Down
- 1. A model of an atom that shows electrons circling the atom.
- 2. A negatively charged subatomic particle.
- 3. forms of the same element that contain different numbers of neutrons
- 5. The outermost shell of an atom.
- 8. A subatomic particle with a positive electric charge.
- 9. The structure of the atom.
- 11. Experimented with cathode rays.
- 13. A substance that's made up of one type of atom
- 16. The smallest building block of a substance.