The Periodic Table

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Across
  1. 2. Each element is made of many _____ that are exactly the same
  2. 3. __________ are positively charged particles in the nucleus
  3. 5. special electrons involved in the bonding process. Atoms have 1 to 8 of them.
  4. 9. We have 18 Vertical columns called Families or __________.
  5. 10. orbit around the nucleus and have a negative charge.
Down
  1. 1. We have 7 horizontal rows called
  2. 2. The number in the top left corner of the element square. Same as number of protons.
  3. 4. This element was originally named Plumbum
  4. 6. The name of the most reactive group.
  5. 7. This element is the only 'W' on the periodic table. Originally called Wolfram.
  6. 8. found in the nucleus of an atom with no charge