Across
- 1. temperature and pressure at which a liquid becomes a gas
- 3. has definite chemical and physical properties
- 5. change into new substance with new properties
- 8. cannot be broken down into simpler substances by chemical means
- 9. smallest unit of an element
Down
- 2. change of matter from one form to another without a change in chemical properties
- 4. combination of substances not chemically combined
- 5. made of two or more elements held together by chemical bonds
- 6. temperature an pressure at which a solid becomes a liquid
- 7. ratio mass and volume of a substance