Atom and Periodic Table

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Across
  1. 2. Electron’s in the outer most shell. _______________ shell.
  2. 4. atomic number from the atomic mass.
  3. 5. These are good conductors of heat and
  4. 8. #6 on The Periodic Table of the Elements.
  5. 11. A _______________ is a vertical column on The
  6. 12. They also have luster and a high
  7. 14. Metals are considered this if they can be made
  8. 16. Atoms are arranged on The Periodic Table of
  9. 17. Abbreviation for Atomic Mass Units. The
  10. 19. This particle has no charge and is found within the nucleus of an atom.
  11. 21. Atoms which loses(s) electron(s) are known as __________.
  12. 22. and electrons, this called the
  13. 24. To find the number of __________: Subtract
  14. 25. organic compounds consisting entirely of hydrogen and carbon.
  15. 26. These types of metals are found in the middle of the Periodic Table.
Down
  1. 1. This scientist created the atomic theory.
  2. 3. These have properties of both metals and nonmetals.
  3. 6. but different numbers of neutrons.
  4. 7. atoms always have the same number of
  5. 9. Metals are considered this if they can be made into sheets.
  6. 10. of protons, neutrons, and electrons.
  7. 13. _____________.
  8. 15. wire.
  9. 18. Table of the Elements
  10. 19. The positively charged dense center of an
  11. 20. Atom with same number of protons and
  12. 23. Atoms which gain(s) electron(s) are known as __________.