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