Across
- 2. The smallest unit of matte
- 5. An atom or group of atoms that has gained or lost electrons
- 7. Plum Pudding Model
- 9. Home to the nucleus and neutron
- 10. Came up with theory of matter around us is made of indivisible tiny particles
- 11. Gold foil experiment
- 14. A form of a chemical element in which the atoms have the same number of protons
- 15. The total count of protons and neutrons within an atom's nucleus
Down
- 1. Planetary Model
- 3. A positively charged particle
- 4. Solid Sphere Model
- 6. A group of two or more atoms that are held together by chemical bond
- 8. Quantum Mechanical Model
- 12. A negatively charged subatomic particle
- 13. A subatomic particle with a neutral charge