Across
- 5. Engineer, a scientist who uses chemical reaction to solve problems
- 6. a chemical that makes a chemical reaction happen faster
- 8. Scientist, A scientist who uses chemical reactions to make new materials
- 9. the smallest particle of matter made up of protons, neutrons, and electrons
Down
- 1. more than one atom combined to form a substance
- 2. Change, a change in state of matter where no new substance is formed
- 3. the result of substances being combined in a chemical reaction
- 4. substances that are combined to form products in a chemical reaction
- 6. Change, Chemicals combining to cause new substances to be formed
- 7. characteristics of matter that can be used to identify substances