Across
- 2. The smallest particle of matter made up of protons, neutrons, and electrons.
- 5. Substances that are combined to form products in a chemical reaction
- 6. A change in state of matter where no new substance is formed.
- 7. More than one atom combined to form a substance (e.g., oxygen – O2).
- 8. A scientist who uses chemical reactions to solve problems.
- 9. The result of substances being combined in a chemical reaction.
Down
- 1. Chemicals combining to cause new substances to be formed.
- 3. A scientist who uses chemical reactions to make new materials.
- 4. A chemical that makes a chemical reaction happen faster.
- 6. Characteristics of matter that can be used to identify substances.