Across
- 7. Where electrons are when they surround the nucleus
- 10. A stable subatomic particle with a positive charge
- 11. Term for columns in periodic table also known as families
Down
- 1. An electron that can participate in atom fusion
- 2. A stable subatomic particle with no charge
- 3. A substance that is formed as the result of a chemical reaction
- 4. A stable subatomic particle with a negative charge
- 5. A substance that takes part in a reaction
- 6. The positively charged central core of an atom
- 8. The term used to describe the rows in the periodic table
- 9. A body of coherent matter usually of indefinite shape