Across
- 4. elements that have properties of both metals and non-metals
- 5. The charge than an electron has
- 7. The _______number is the same as the number of protons and electrons
- 8. Electrons orbit the nucleus in ______ levels
- 9. There are _______ periods on the periodic table.
- 11. has no charge and is found in the nucleus
- 13. Add the number of protons and neutrons to find the atomic ______.
Down
- 1. the number of _____ is used to determine the atomic number
- 2. The charge that a proton has
- 3. the negatively charged subatomic particle
- 5. where the protons and neutrons are found
- 6. The Noble ______ will not react at all
- 10. The periodic table has 18 ______.
- 12. the overall charge of an atom