Across
- 1. burning a match is this type of change
- 4. a chemical reaction that absorbs energy (often feels cold)
- 5. melting an ice cube is this type of change
- 7. this is what everything is made of
- 9. how much matter is in a particular space
- 10. how much space an object takes up
Down
- 2. a chemical reaction that releases energy (often gives off heat)
- 3. the measurement of the effect of gravity on an object
- 6. a combination of things that cannot be separated because they are chemically combined
- 8. a combination of things that can be separated