Unit 3 Periodic Table Crossword

123456789101112131415161718
Across
  1. 5. Element important for bones and shells
  2. 9. Noble gas that glows brightly in electric signs
  3. 10. Very reactive element; forms fluoride
  4. 11. — Ionic compound made from Na⁺ and Cl⁻
  5. 13. Universal solvent made of hydrogen and oxygen
  6. 14. A very light noble gas used in balloons
  7. 15. Light metal used in rechargeable batteries
  8. 16. Good electrical conductor used in wiring
  9. 17. Makes up most of Earth’s atmosphere
  10. 18. Metal used to coat steel to prevent rust
Down
  1. 1. Soft, valuable metal with symbol Au
  2. 2. Strong disinfecting element used in pools
  3. 3. Compound of nitrogen and hydrogen used in cleaners
  4. 4. Metal that rusts when exposed to oxygen and water
  5. 6. Nonmetal that burns with a blue flame
  6. 7. Main component of natural gas and a greenhouse gas
  7. 8. Highly reactive metal found in many salts
  8. 11. Element used in computer chips and found in sand
  9. 12. Essential gas for most forms of combustion
  10. 16. DIOXIDE Gas produced when carbon burns or when we exhale