Across
- 1. what rule states that electrons must occupy all of the orbitals of a sublevel before pairing begins?
- 3. visually seperate solids can be separated by?
- 7. Who discovered electrons while experimenting with a cathode ray tube?
- 9. polar molecules can be dissolved in...
- 11. what is a combination of 2 or more pure substances in which each substance retains its own chemical properties?
- 13. the number of protons in the nucleus
- 17. who created the first periodic table?
- 18. a single compound breaks down into two or more elements or new compounds is...
- 20. what is the ratio of the error to the actual value multiplied by 100?
Down
- 2. what is located on the right of the metalloid line?
- 4. what is located on the left of the metalloid line?
- 5. what is the smallest ratio of cations to anions referred to as?
- 6. a description of an element's tendency to undergo chemical reactions is called?
- 8. what is the mass of an atom given in amu?
- 10. Who discovered the nucleus of an atom?
- 12. the transfer of electrons between atoms that results in cations and anions...
- 14. atoms will gain, lose, or share valence electrons to attain 8 valence electrons is what rule?
- 15. what is called when oxygen combines with a substance and releases heat and light?
- 16. What is the lowest energy of an atom called?
- 19. horizontal rows on the periodic table are called...\