Across
- 3. The bond between 2 atoms that are connected
- 5. Composed of an element or compound
- 9. Made of a group of the same type of atoms
- 10. A group of atoms bonded together
Down
- 1. A substance that is not chemically bonded
- 2. Building block of matter
- 4. May be observed separately
- 6. Cannot be observed separately
- 7. A substance made of 2 or more elements
- 8. Takes up mass and space