Across
- 1. Can be found by subtracting the atomic number and atomic mass.
- 4. Tells you how many protons are in the nucleus of an atom.
- 8. Reflective solids at room temperature.
- 9. Holds the protons and neutrons in the center of an atom.
- 10. Can be found in the nucleus with a positive charge.
- 11. The vertical columns on the periodic table of elements.
- 12. The smallest particle of an element that still has the properties of that element.
Down
- 2. A subatomic particle with a negative charge in an atom.
- 3. A letter that represents an element.
- 5. Elements between metals and non-metals on the periodic table.
- 6. Represents the number of protons and neutrons in the nucleus of an atom.
- 7. Made of only one type of atom.
- 10. The horizontal rows on the periodic table of elements.