Across
- 2. an atom that has gained or lost electrons
- 6. A pure substance made of one type of atom
- 7. A positively charged particle found in the atom's nucleus
- 10. The smallest
- 12. A negative ion
- 13. Gaining electrons gives an ion a _______ charge
Down
- 1. A positive ion
- 3. A neutral particle found in the atom's nucleus
- 4. The _______ table arranges all the elements into repeating patterns
- 5. Losing electrons gives an ion a _______ charge
- 8. A row on the periodic table
- 9. A negatively charged particle that orbits the atom
- 11. The outer electrons are called _______ electrons
- 14. A column on the periodic table