Across
- 2. anything that has mass and occupies space
- 3. only one substance present
- 6. smallest unit of matter consisting of one element
- 7. cannot be broken down into simpler substances by chemical or physical means
- 9. one visible phase, same properties throughout
Down
- 1. two or more visible phases, different properties in different phases
- 4. physical combination of 2 or more substances
- 5. can be broken down into constituent elements by chemical, but not physical, means
- 8. consisting of more than one of the same element