Across
- 5. easily able to catch fire and burn quickly
- 6. Early ____ sometimes reported having produced an unknown flammable gas during their experiments.
- 8. the smallest part of a substance that can exist by themselves, made of one or more atoms
- 9. In his early forties, Joseph became ____ with the possibility of flight.
- 10. I performed an ____, a test or trial to prove my hypothesis.
Down
- 1. a scientist who studies the nature and properties of energy and matter
- 2. a high level of standing or respect
- 3. dipped or placed into a fluid or some other substance that surrounds completely
- 4. the outer covering or bag of an airship that holds gas or heated air
- 6. easily catching fire or burning up
- 7. the ability or tendency to float