Across
- 4. The substances in a compound are always joined in a ___________ proportion.
- 7. check this property by scratching one material with another
- 8. a separation technique you would use to separate sand from water
- 9. Whether an object sinks or floats depends on its _____________.
- 11. Theory the theory that states that all particles are in constant motion
- 14. a mixture who parts are not easily seen or separated
- 16. Density = Mass รท _____________
- 17. Syrup has a __________ viscosity.
- 18. evaporation and boiling are both part of this phase change
- 20. a solid that may form during a chemical reaction
- 22. Mixtures are classified as solution, suspension, or colloid based on the size of the ___________ particles.
Down
- 1. The particles in a solid ___________ in place.
- 2. the smallest particles that make up an element
- 3. a pure substance made of 2 or more substances in a fixed proportion
- 5. Reactivity and flammability are examples of a ____________ change.
- 6. dry ice changes from a solid directly to a gas in this phase change
- 10. Both the shape and volume of a __________ are definite.
- 12. the ability to allow heat to flow
- 13. gas changing to a liquid
- 15. A ___________ property can be observed or measured without changing the composition of the substance.
- 19. orderly The arrangement of molecules becomes _____ _______ as a liquid changes to a solid.
- 21. substance that cannot be broken down into smaller substance
- 23. Particles are free to move randomly and quickly in straight lines in this state of matter.