Chemistry Crossword Puzzle

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Across
  1. 3. Gases / Elements that occupy group 18 of the Periodic Table
  2. 6. / During chemical reactions they tend to gain electrons from metals to form anions or they share electrons with other metals
  3. 7. Metals / Elements that occupy group 1 of the Periodic Table
  4. 9. / Radioactive elements with atomic numbers between 89-103
  5. 10. / Elements that are solid at room temperature with the exception of Mercury
Down
  1. 1. Electron / An electron located in the outer shell of an atom
  2. 2. / 6.02x10^23
  3. 4. / Also known as "Semi-Metals"
  4. 5. / Elements with atomic numbers between 57-71
  5. 8. / Elements that occupy group 17 of the Periodic Table