Across
- 2. The number of quarks which have been found
- 3. The number of neutrons in a typical Flourine atom
- 4. The only particle in an atom without charge
- 6. Horizontal row on the periodic table
- 8. The mass number (atomic mass) of an atom containing 6 protons and 7 neutrons
- 11. The element in the 5th period & the 13th group
- 12. An element with very similar properties to Neon
- 15. Particles that make up protons and neutrons
- 17. The type of element between metal and non-metal
- 18. The model of the atom that says electrons travel in fixed orbits
- 19. Where the electrons are located in an atom
- 20. Most of an atom is made up of _______ space
Down
- 1. The number of protons in Boron
- 3. Group 18 elements are called _______ gasses
- 4. The positively charged center of an atom
- 5. The particle which determines what element it is
- 6. A repeating pattern
- 7. The category of elements contained on the left side of the periodic table
- 9. The physicist who discovered the nucleus
- 10. The most common form for non-metals besides gas
- 13. Vertical column on the periodic table
- 14. If an atom was the size of a stadium, the nucleus would be the size of a
- 16. The most common form for metals