Across
- 3. Three connections between atoms.
- 5. Two single electrons forming a pair.
- 7. Particles that stabilize the neutrons.
- 8. The center of an atom
- 12. Organized by the number of bonds and number of protons.
- 13. Orbit the nucleus and participate in bonding.
- 15. The total weight of all the atoms in a molecule.
- 16. The number of protons in an atom.
Down
- 1. Two connections between atoms.
- 2. A one or two letter abbreviation for an atom.
- 4. Chemical reactions abbreviation.
- 6. Chemical reactions that absorb energy.
- 9. Chemical reactions that release energy.
- 10. Made of two or more atoms.
- 11. The smallest unique particles.
- 14. Positive particles in the nucleus.