Across
- 4. J.J Thomson used the cathode ray tube to discover this particle
- 6. the building block of matter
- 8. when two or more elements come together to form a _______
- 13. particle with a negative charge
- 14. formulated the uncertainty principle (Werner ______)
- 15. chemistry is the study of _________
- 17. Greek philosopher who proposed the idea of a atom
- 19. scientific ______ explains why things happen
- 20. Greek word for atom
- 21. ____ is a statement that describes a consistent, observable pattern or regularity in nature under specific conditions
Down
- 1. what kind of table holds all the elements
- 2. Ernest Rutherford discovered this particle
- 3. Neutrally charged particle in the nucleus
- 5. something made up of only one type of atom
- 7. a simplified representation of a complex phenomenon, system, or process
- 9. positively charged particle in the nucleus
- 10. Erwin Schrodinger presented this idea instead of fixed paths
- 11. Proposed the plum pudding model of the atom (J.J _______)
- 12. was discovered by James Chadwick in 1932
- 16. did the gold foil experiment(Ernest ______)
- 18. A ____ reaction is when a set of substances undergo a chemical change and form a different substance