Elements

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Across
  1. 2. Inside of pennies
  2. 5. element with the atomic number 4
  3. 8. Tin foil
  4. 9. number 1 on periodic table
  5. 12. the most reactive element
  6. 14. light up beer signs
  7. 15. Precious metal used in jewelry
Down
  1. 1. Used in batteries
  2. 3. main element in wood
  3. 4. Used as a chemical in most pools
  4. 6. Fire can't burn without it
  5. 7. Used in balloons
  6. 10. Non-metal in group 15 and period 2
  7. 11. The element that comes after stone in minecraft
  8. 13. used in bullets and fishing weights