Across
- 2. the building blocks of life
- 4. the study of atoms and molecules
- 5. a way to test a theory
- 10. negatively charged particle
- 11. the study of rocks
Down
- 1. a person who tests theories
- 3. the study of weather
- 6. _____table
- 7. an educated guess
- 8. salt
- 9. the study of life
- 12. a place to conduct experiments