Science & Technology crossword (18h group for 16h group)

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Across
  1. 1. A test with a person or animal to check the side effects of a product
  2. 9. Something that happens that we cannot easily explain
  3. 11. A verb, when the light is divided with refraction
  4. 13. An optical effect that happens during hot weather
  5. 14. When there is no air
  6. 16. The practise of testing a theory, we also do this on laboratory animals
  7. 17. A rock that falls to earth from space
  8. 18. The person who studies animals
Down
  1. 2. convert (an atom, molecule, or substance) into an ion or ions, typically by removing one or more electrons
  2. 3. A chemist before chemistry was invented, also the title of a novel by Paolo Coelho
  3. 4. The realisation of something that was not known before
  4. 5. A person who works in a laboratory
  5. 6. It's the earth's natural satellite
  6. 7. "_______ pig": a person that volunteers to do clinical trials
  7. 8. "______ physics": the physics of the very small
  8. 10. Number 8 on the table of elements
  9. 12. An explosive star that has collapsed
  10. 15. A type of pharmaceutical product