Across
- 3. What will be different between an isotope?
- 5. These have no electrical charge.
- 7. An electron that is found on the outermost energy level of an atom
- 8. How many electrons can the fourth energy level hold?
Down
- 1. What moves around the outside of the nucleus of an atom?
- 2. What is based on the number of protons?
- 3. Average mass of naturally occurring isotopes of an element
- 4. Neutrons and _______ are larger and heavier than electrons.
- 6. Electron clouds are sometimes called this
- 9. The electrical charge an atom carries is called what?