chemistry

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Across
  1. 3. A very reactive gas used in toothpaste and some chemicals.
  2. 4. A noble gas that glows brightly in neon signs.
  3. 5. A major component of sand and computer chips.
  4. 6. Found in DNA and matches; essential for life.
  5. 8. A lightweight, non-rusting metal used in cans and airplanes.
  6. 10. Vital for breathing and combustion; part of water and many compounds.
  7. 11. A noble gas used in balloons; it’s very light and non-reactive.
  8. 12. Used in glass and ceramics; also important in semiconductors.
  9. 14. A yellow solid used in fertilizers and medicines.
  10. 15. A soft metal used in batteries and mood-stabilizing medications.
  11. 16. A light metal important for the body and used in alloys.
Down
  1. 1. The key element of life; found in diamonds, graphite, and all living things.
  2. 2. A lightweight, strong metal used in aerospace materials.
  3. 7. Makes up most of Earth’s atmosphere and is essential for proteins.
  4. 9. A soft, reactive metal found in salt (NaCl).
  5. 11. The lightest and most abundant element in the universe; found in water.
  6. 13. A greenish gas used to disinfect water; found in salt.