Across
- 3. charged atoms, not electrically balanced
- 4. smallest negative subatomic particles
- 6. positive subatomic particles
- 8. spherical orbits replaced by orbitals
- 11. opposite electrical charges attract each other while same charges repel
- 12. positive ions
- 14. weighted average of the masses of all the naturally occurring isotopes of that element
- 15. total number of particles in its nucleus
Down
- 1. behavior of matter and energy at the atomic and subatomic levels
- 2. electrons move only in distinct energy levels
- 5. unique number of protons in the atoms of each element
- 6. negatively charged electrons moving rapidly through a positively charged matrix
- 7. dense positively charged nucleus surrounded by negatively charged electrons
- 9. spherical regions located at fixed distances from the nucleus
- 10. atoms of the same element with differing numbers of neutrons
- 13. negative ions