Periodic Table

12345678
Across
  1. 3. Has a trunk
  2. 5. Likes to chase mice
  3. 6. 3rd element of the periodic table
  4. 8. Man's best friend
Down
  1. 1. Large marsupial
  2. 2. Needed to fill a
  3. 4. Flying mammal
  4. 7. 1st Element of the periodic table