Across
- 3. hot coffee
- 4. toxic acid
- 6. a pinecone
- 8. lightbulb
- 10. food
- 12. steam
- 14. of matter gas solid liquid
- 18. changes substance
- 19. how light something is
- 20. flavoring in water
- 21. shiny
Down
- 1. substance remains same
- 2. fire
- 5. to water
- 7. nuclear
- 9. crayon
- 11. diamond
- 13. rotting apple
- 15. odor
- 16. orangry brown
- 17. sunlight on ice