Across
- 3. the study of living organisms
- 5. A compound is a unique substance that consists of two or more elements combined in fixed proportions
- 8. substance made by mixing other substances together
- 11. class of substances that cannot be separated into simpler substances by chemical means
- 12. to conclude or ascertain
- 13. relating to or used in science
- 14. a colorless, odorless, flammable gas that combines chemically with oxygen to form water
- 15. a liquid mixture
- 16. to make understandable
Down
- 1. a group of atoms bonded together
- 2. an idea that proposes a tentative explanation about a phenomenon or a narrow set of phenomena observed in the natural world
- 4. the central and most important part of an object, movement, or group, forming the basis for its activity and growth
- 6. a test or trial to discover something unknown
- 7. the matter from which a thing is or can be made
- 9. a procedure or process for attaining an object
- 10. to see, get knowledge of, learn of, find, or find out; gain sight or knowledge of