Chemistry Unit Crossword

123456789101112131415161718192021222324
Across
  1. 4. : The regional space around the nucleus of an atom
  2. 5. : Has a positive charge
  3. 7. : The ingredients present before a reaction
  4. 9. : The center of an atom
  5. 12. : Has a negative charge
  6. 15. : A substance made from the mixture of two or more atoms
  7. 16. : The outermost shell of an electron determines the atom's chemical properties
  8. 19. : A reaction where heat is created
  9. 21. : The average weight or mass of a element
  10. 22. : A reaction where when cold is created
  11. 24. the P.T.) : Rows that go up by electrons highest electricity level
Down
  1. 1. : Has no electric charge
  2. 2. the P.T.) : Columns of elements that have same chemical properties
  3. 3. : The ingredients produced after a reaction
  4. 6. : After a reaction mass cannot be created or destroyed
  5. 8. : A Russian chemist that came up with the periodic table
  6. 10. : Are good conductor of electricity and are usually shiny
  7. 11. : Two or more atoms chemically bonded
  8. 12. : A substance that is made from atoms with the same number of protons
  9. 13. : Element abbreviation
  10. 14. : A group of rare element gases
  11. 17. : The number of protons in the nucleus
  12. 18. : Bad conductor of electricity and a dull appearance
  13. 20. : Has both characteristics of a metal and non-metal
  14. 23. : A form of matter that cannot be broken down by any chemical means