Across
- 2. An answer that needs evidence to support it.
- 4. A cluster of two or more atoms.
- 5. The output of a chemical reaction.
- 8. How many atoms in a molecule
- 9. Allowed
Down
- 1. Supports an answer.
- 3. The input of a chemical reaction.
- 6. Supports the support to an answer.
- 7. Not allowed