Atomic Theory

2. The model made by J.J.Thomson
3. A particle consisting of two protons and two neutrons
4. A particle in the atom with a negative charge
7. The scientist that made the "Plum Putting Model"
11. Rutherford's experiment on a atom
13. The scientist that named the atom
15. A particle with a neutral charge
17. The core of an atom
18. A greek philosopher that said "All matter was made of only four elements"
19. The scientist that said the mass was mostly the nucleus
20. A positive particle in the atom

1. The greek definition of the word "Atom"
5. A process in which atoms disintegrate by emitting, or releasing, smaller particles
6. A statement in a logical argument
8. Thomson's experiment on a atom
9. A cloud filled with orbiting electrons
10. The scientist who made the first atomic theory
12. What Democritus called the atom
14. Represents the most probable range of locations for finding an electron
16. The scientist that discovered the nucleus