Across
- 2. A set of chemical symbols showing the structure of a compound.
- 3. Atoms with full outer energy shell are known to be______.
- 5. The combining capacity of an element.
- 8. Which element has 8 valence electrons and 2 energy levels
- 10. Which chemical family has 7 valence electrons?
- 11. An ion with a positive charge
- 12. Which element has a full outer level with only 2 electrons?
- 13. They have the same chemical features but different physical properties.
- 15. Which element has only one electron?
Down
- 1. A positively charged subatomic particle.
- 4. Which element has 3 energy levels and 1 valence electron?
- 6. The smallest particle of an element.
- 7. Which element has 18 protons and 20 neutrons?
- 8. A neutral subatomic particle.
- 9. An electrically charged atom formed by the loss or gain of one or more electrons.
- 11. A substance made from two or more elements.
- 14. What is an abbreviated way to name an element called?