Across
- 3. gas are well separated with no regular arrangement
- 5. ln ice cube melting into liquid water is a familiar example of the process
- 6. point Boiling point becomes lower as the external pressure is reduced
- 7. The most familiar examples of phases are solids, liquids, and gases.
- 9. Water turning into ice when the temperature drops below 0˚C Evaporation Drying clothes in the sun is one of the most common examples of evaporation
- 11. ice crystals inside boxes of frozen foods: Frozen foods sublime and results in
- 14. point salt lowering the freezing point of water to keep ice from freezing on roads in cold temperatures.
- 16. Frost is the deposition of water vapour from humid air or air containing water vapour on to a solid surface.
Down
- 1. plasma include lightning, the aurora, a welding arc, and (of course) a plasma ball toy
- 2. Particles do not change
- 3. change phase changes include melting, freezing, condensation, evaporation, and sublimation.
- 4. when the water droplets in clouds combine, they become heavy enough to form raindrops to rain down onto your head.
- 8. point Melting point of a solid is the same as the freezing point of the liquid
- 10. gases include air, water vapor, and helium
- 12. point will begin to form at 44 degrees Fahrenheit (7 degrees Celsius)
- 13. liquid is heated, the atoms or molecules gain kinetic energy
- 15. solids are common table salt, table sugar, water ice, frozen carbon dioxide (dry ice), glass, rock, most metals, and wood