Chemistry Crossword Puzzle

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Across
  1. 3. The element with 22 protons
  2. 4. How many groups there are on the periodic table
  3. 6. Which element has 79 protons?
  4. 9. How many periods there are on the periodic table
  5. 10. The first element on the periodic table
  6. 12. The element with 48 protons
  7. 15. The element with the atomic symbol I
  8. 16. Chadwick, The man who found the Neutron
  9. 17. Ions that form by losing electrons
  10. 19. which element has 66 protons?
  11. 20. The element with 31 protons
  12. 26. The final element on the periodic table
  13. 27. When did Dmitri Mendeleev publish a table of the elements organized by increasing atomic mass?
  14. 28. Which element has the atomic symbol Pb?
  15. 29. diverse in character or content
Down
  1. 1. of the same kind; alike
  2. 2. If it CAN be separated by physical means it is a _______
  3. 5. Atoms that have an unequal number of electrons and protons
  4. 7. What test is used to ID some metals in compounds?
  5. 8. pure substances that are the unions of two or more elements
  6. 11. How many protons does Radon have?
  7. 13. Theory that states Atoms are building blocks of elements
  8. 14. Atoms with the same number of electrons and protons
  9. 17. What are bundles of light energy that is emitted by electrons as they go from higher energy levels to lower levels?
  10. 18. The element with the atomic symbol as Sb
  11. 21. Law, The law that was named after Robert Boyle
  12. 22. substance, If it CAN'T be separated by physical means it is a ____ _________
  13. 23. A substance made of all the same kind of particle
  14. 24. The shape of an atom
  15. 25. The amount of elements on the Periodic Table