Atomic Theory

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