Across
- 4. A temperature at which a substance boils.
- 5. A change of state directly from solid to gas.
- 6. the contraction of matter caused by a change in heat.
- 7. A temperature at which a substance freezes.
Down
- 1. A temperature at which a substance melts.
- 2. the expansion of matter caused by a change in heat.
- 3. Change that alters the form of an object, without changing what type of matter it is.