Across
- 2. the smallest part of an element
- 6. an element made up of only one type of atom
- 7. less reactive atoms are on this side
- 9. electrons create rings called
- 11. surrounds the nucleus
- 12. silicon is an example of a
- 13. there are 118 atoms known, truth or false?
- 14. more reactive atoms are on this side
- 17. has a positive charge and is found in the nucleus
- 18. the amount of energy levels that can exist in an atom
Down
- 1. has the most mass and is found in the center
- 2. the measurement used to find the mass of the atom
- 3. bismuth is an example of a
- 4. the periodic table is used largely in this
- 5. has a neutral charge and is found in the nucleus
- 8. has a negative charge and orbits the nucleus
- 10. hydrogen is an example of a
- 11. the amount of electrons that can be in the second ring
- 15. amount of electrons that can be found in the first ring
- 16. protons and neutrons added up make this