Across
- 3. A material that does not let light through (e.g., wood)
- 4. Liquid turning into solid (e.g., water to ice)
- 6. A change where a new substance forms
- 8. Liquid turning into vapor
Down
- 1. The bouncing back of light or sound from a surface.
- 2. Change where the substance stays the same
- 5. The material (solid, liquid, or gas) sound travels through
- 7. Smallest particle from which all matter is made