Across
- 3. A substance that cannot be broken down into simpler substances by chemical means
- 5. The principle stating that a maximum of two electrons may occupy a single atomic orbital, but only if the electrons have opposite spin
- 6. The smallest constituent unit of ordinary matter
- 8. A chart of the chemical elements arranged by atomic number
- 9. Negatively charged subatomic particle
- 12. Region surrounding the nucleus where electrons are likely to be found
- 16. Shorthand way of writing an elements electron configuration using the previous noble gas
- 18. Electrons are added one at a time to the lowest energy orbitals available until all the electrons of the atom have been accounted for
- 19. The central part of an atom, containing protons and neutrons
Down
- 1. The arrangement of electrons in the different energy levels in an atom
- 2. The number of protons in the nucleus of an atom
- 4. Taking in energy from light
- 7. Particles in the nucleus with no charge
- 10. Release of energy as light
- 11. The outermost electrons of an atom
- 13. Elements having similar chemical properties
- 14. Rows in the periodic table
- 15. A positively charged subatomic particle
- 17. Vertical columns in the periodic table
- 20. The arrangement of electrons in the orbitals of an atom