Across
- 2. Early atomic model describing electrons embedded in a positively charged sphere
- 4. Scientist who refined the planetary model to include quantized electron orbits
- 6. Scientist who performed the gold foil experiment and developed the nuclear model of the atom
- 9. Principle stating that when two elements form different compounds, the ratio of the masses of the second element that combine with a fixed mass of the first element can be expressed as small whole numbers
- 13. Scientist known for his early work on atomic theory and his proposal of the law of multiple proportions
- 14. Ancient Greek philosopher who first proposed the concept of the atom
- 15. Physicist who discovered the electron and proposed the Plum Pudding Model
Down
- 1. Concept proposed by Aristotle stating that matter consists of earth, water, air, and fire
- 3. Law stating that a chemical compound always contains the same elements in the same proportion by mass
- 5. Current scientific model that describes electrons as existing in a "cloud" around the nucleus
- 7. Early theory suggesting that matter is composed of indivisible units
- 8. Theory proposing that all matter is made up of atoms that are indivisible and indestructible
- 10. Model of the atom proposing electrons orbit the nucleus at fixed distances
- 11. Model describing electron probability distributions rather than fixed orbits
- 12. Greek philosopher who theorized about four fundamental elements