Across
- 6. A sign of chemical related to color
- 8. The mass per unit volume of a substance
- 9. The identity of substance changes
- 10. When something rots, like food
- 12. The appearance of an object
- 13. When iron is exposed to oxygen and water
- 14. Changes from a liquid to a solid
- 15. A physical change where the size or shape of an object changes
Down
- 1. A sign of physical change related to temperature
- 2. When a substance combines with oxygen and release heat
- 3. The physical appearance of an object changes, but not the identity
- 4. The identity of the substance
- 5. Changes from a liquid to a gas
- 7. Changes from a solid to a liquid
- 11. A physical change where a substance liquifies