Atom and Periodic Table

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