I LIKE CHEMISTRY

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Across
  1. 3. I am light and power your batteries; Arfwedson's discovery
  2. 9. Ghostly-glowing element from pitchblende; Curie’s radiant find
  3. 10. — love the energy! ⚡ Below is a ready-to-paste list in the
  4. 12. Emerald-born guard used in aerospace and X-ray gear
  5. 13. Bunsen saw my red lines; used in precision clocks and glass
Down
  1. 1. Heavy tracer for medicine; green in bright pyrotechnics
  2. 2. Soft silvery metal found in salt; freed by Davy
  3. 4. Light and strong: jet parts, fireworks, once called magnesia
  4. 5. I glow lilac in flames and feed the soil; vital for life
  5. 6. Rare alkali, born of actinium; Perey’s elusive queen
  6. 7. Blue-burning timekeeper; discovered by spectral lines
  7. 8. Crimson flame-maker in fireworks; from Scottish stone
  8. 11. I build bones, chalk, cement — strong in teeth and towers