Periodic Table Vocabulary Words

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Across
  1. 2. a group that consist of all radioactive elements
  2. 5. group that consists of elements that contain 8 valence electrons
  3. 7. horizontal rows on the periodic table
  4. 8. if a substance can be stretched into thin wires it is
  5. 9. the opposite of dull
  6. 10. vertical rows on the periodic table
Down
  1. 1. group of elements that are found naturally on Earth and are rare Earth metals
  2. 3. the group that contains the most reactive element on the periodic table
  3. 4. any substance that is made up of only 1 type of atom
  4. 6. if a substance can be hammered into thin sheets without breaking apart it is