Across
- 2. An element commonly used for jewelry
- 4. A science famous for proposing his atomic theory
- 6. The chemical symbol for an element commonly found in electrical wiring
- 8. An element with an atomic mass of 47.86 AMU
- 9. Proposed the planetary model of the atom
- 11. A pure substance that cannot be broken down into smaller pieces
- 13. An element with seven electrons
- 14. An important element for respiration
- 16. This scientist modeled the atom after a popular dessert
- 17. Br
Down
- 1. a subatomic particle with a negative charge
- 3. Number 27 on the periodic table
- 5. the fundamental unit of matter
- 7. The outermost energy shell in a Bohr Model
- 10. This element has 6 protons
- 12. The chemical symbol of an element often used in fluorescent signs
- 15. calculated by subtracting an elements atomic mass by its atomic number