Across
- 2. Made of protons, neutrons, and electrons.
- 5. Substances that are combined in a chemical reaction.
- 6. No new substance is formed.
- 7. Examples of these include NaCl, H2O, and CO2.
- 8. Uses chemical reactions to solve problems.
- 9. The results in a chemical reaction.
Down
- 1. A new substance is formed.
- 3. Uses chemical reactions to make new materials.
- 4. Speeds up a chemical reaction.
- 6. We use these to identify substances.