Chemistry Crossword Puzzle

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Across
  1. 3. Atoms are made up of three particles (protons, neutrons, and electrons)
  2. 5. Used in Math and Chemistry
  3. 8. 5th period teacher
  4. 9. Has 8 valence electrons
  5. 10. The process of burning something (chemical combination)
  6. 12. Greyish-white metal
  7. 14. Closed shell electron configuration
  8. 15. Very large or small numbers
  9. 16. Many transition elements have more than one oxidation state (iron)
  10. 17. Have an infinite number of sf
  11. 18. Small Particle
  12. 19. An atom or molecule describes the minimum amount of energy required to remove an electron
  13. 20. Two electrons will not be in the same state in am atom
  14. 24. All matter is made up of tiny invisible particles (atoms)
  15. 25. What has 1 valence electron
  16. 26. 5th period class
  17. 28. Electrons will fill empty orbitals
  18. 29. (olem)
  19. 30. The mass of an atom of a chemical element expressed in units
Down
  1. 1. Chemical bond that involves the sharing of electron pairs between atoms
  2. 2. Any set of metallic elements occupying a central block
  3. 4. Half the distance between the Nuclei
  4. 6. Intermediate between those of metals and solid nonmetals
  5. 7. elcetonr
  6. 11. The distribution of electrons of an atom or molecule
  7. 13. A chemical compound that contains exactly two different elements
  8. 21. A formula giving the proportions of the elements present in a compound
  9. 22. d is what kind of shape
  10. 23. Physical and chemical properties of the elements recur in a systematic way
  11. 27. Fluorine,Chlorine, Bromine,Iodide, and Astatine