Across
- 3. molecule formed only of carbon and hydrogen with single bonds
- 6. chemical element having the same number of protons but a different number of neutrons
- 7. a subject we have been learning since middle school
- 8. a base element of the matter
Down
- 1. an unit of measurement for the quantity of matter in chemistry
- 2. row in the periodic table of elements
- 4. separation of the parts of a body that becomes liquid
- 5. apparatus where controlled chemical transformations take place
- 8. colorless, odorless, inert noble gas
- 9. a sample used for diagnostic analysis