Across
- 3. two or more elements chemically combined
- 4. matter that always has the same composition and properties
- 6. the ability to strike a substance without it shattering
- 7. tendency of a substance to chemically react with another substance
- 9. separation of a mixture by particle size
- 17. temperature that a substance changes from a solid to a liquid
- 19. mixture whose parts are noticeably different
- 20. the ability of a substance to burn in the presence of oxygen
- 21. ______ properties of matter can be observed/measured without changing the chemical composition of the substance.
Down
- 1. basic building block of all matter
- 2. the ability of heat to flow through a material
- 5. temperature that a substance changes from a liquid to a gas
- 8. a solid that is produced from the chemical combination of two liquids
- 10. mixture whose parts are dispersed thoroughly and difficult to tell apart.
- 11. separation of a liquid solution by differences in boiling point. (hint: how seawater is changed to fresh water)
- 12. simplest form of matter that cannot be broken down further
- 13. anything that has mass and takes up space
- 14. ratio of an objects mass over its volume
- 15. two or more substances combined physically, not chemically
- 16. ______ properties of matter can only be observed by the substance undergoing a change in composition.
- 18. resistance of a liquid to flow