Across
- 6. a reaction that alters the chemical composition of a substance
- 8. the oxidation of iron into rust
- 11. gas to liquid
- 12. an example of matter that you use for online classes
- 13. a process by which plants make energy
- 15. movement from liquid to gas
- 17. the arrangement of particles far apart
Down
- 1. a sign of a chemical change
- 2. solid to liquid
- 3. the idea that matter consisted of particles
- 4. describe the physical characteristics of a substance
- 5. movement from liquid to solid
- 7. burning of fuel
- 9. the study of matter
- 10. the arrangement of paticles close together
- 14. particles that move round each other
- 16. made up of small particles