Science Hunt

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Across
  1. 5. A magnet that can be turned on and off
  2. 7. Chemical reaction inside a plant
  3. 11. Longest wave on EM spectrum
  4. 13. Type of food that provides energy
  5. 14. Yttrium is number...
  6. 15. Genes found on the same place on a chromosome
  7. 16. Type of pH indicator
  8. 17. Particles with +1 charge
  9. 19. ??
  10. 20. Most abundant element in earths crust
Down
  1. 1. Makes up 2/3 of a cell
  2. 2. Most popular ‘fruit’ in the world
  3. 3. Antibiotic found by accident
  4. 4. Chemical messengers in neurones
  5. 6. Most populated city in the world
  6. 8. ??
  7. 9. Breakdown of rocks
  8. 10. 59
  9. 12. Famous physicist on first name basis
  10. 18. ??