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Science CH 14
Changes of State
Question | Answer |
---|---|
What is a solid? | A form of matter that has definite shape and volume. |
What is a liquid? | A form of matter that has no definite shape but has definite volume. |
What is a gas? | A form of matter that has no definite shape or volume. |
What is the changing from a liquid to a gas? | Vaporization |
What is the change from a gas to a liquid? | Condensation |
What is the change from a solid to a liquid? | Melting |
Explain what evaporation is and how it works. | It is slow or gradual vaporization. It takes place at the surface of a liquid. The higher the temperature, the faster the evaporation. |
Give two examples of how thermal expansion or contraction happens. | Thermal expansion-When it is heated, the solid will expand or increase in size. Contraction- When the solid is cooled the particles vibrate slowly which causes it to decrease in size. |
How can matter skip a state of matter and go from a solid to a gas OR a gas to a solid? | When you add energy to a solid, it changes directly to a gas. This is called sublimation When energy is removed from a a gas, it changes directly to a solid. This is called deposition. |