Across
- 3. True or False: H2O is a compound
- 4. What everything is made of
- 8. True or False: C6 is an element
- 9. True or False: Cu3Zn2 is a compound
- 10. 2 or more substances that are NOT chemically combined
Down
- 1. 2 or more elements that are chemically combined.
- 2. ________ is the rarest element in the universe
- 5. A substance that cannot be broken down or separated
- 6. ________ is the most abundant element in the universe
- 7. A substance like Oobleck