Metals

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Across
  1. 3. – used in fireworks to make red colors
  2. 4. – used to strengthen steel
  3. 6. – used to clean swimming pools
  4. 7. – used in car catalytic converters
  5. 11. – used in medical X‑ray contrast liquids
  6. 12. – used in LED lights and TV screens
  7. 14. – used in some types of batteries
  8. 16. – used in steel to make it stronger
  9. 17. – used as fuel in nuclear power plants
  10. 19. – used in some types of semiconductors
  11. 21. – used in bright advertising signs
  12. 22. – used in rechargeable batteries
Down
  1. 1. – used in jewelry and catalytic converters
  2. 2. – used in flame retardants
  3. 3. – used in solar cells and photocopiers
  4. 5. – used to make strong, lightweight sports equipment
  5. 8. – used to make shiny chrome coatings
  6. 9. – used in solar panels
  7. 10. – used in nuclear reactor cladding
  8. 11. – used in heat‑resistant glass
  9. 13. – used in old-style light bulb filaments
  10. 14. – used in atomic clocks
  11. 15. – used in old thermometers
  12. 18. – used inside light bulbs
  13. 20. – used in flame‑retardant materials