Term
give the name for each state change, and whether it is exo/endothermic:
solid to liquid...
liquid to solid...
liquid to gas...
gas to liquid...
solid to gas... |
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Definition
solid to liquid --> melting --> endo
liquid to solid --> freezing --> exo
liquid to gas --> boiling --> endo
gas to liquid --> evaporation --> endo
solid to gas --> condensation --> exo |
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Term
| The curvy arrow on a phase change diagram shows what change of state? |
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Definition
| vapor pressure curve/boiling |
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Term
| The straight arrow on a phase change diagram shows what change of state? |
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Definition
| solid liquid curve/melting curve |
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Term
| What What two changes will enable a gas to condense into a liquid? |
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Definition
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Term
| What causes air pressure? |
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Definition
| Air pressure is the weight exerted by tiny particles in the air. What causes it is that from the space between air particles, and depending on how compressed the molecules are the pressure is higher or lower. |
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Term
| Why is air pressure lower on Mt. McKinley? |
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Definition
| The air pressure is lower because on top of the mountain, more air pressure is above you. It compresses the air molecules, decreasing the overall pressure. |
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Term
| Why is evaporation a cooling process? |
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Definition
| Evaporation is a cooling process because the liquid gives off heat which causes evaporation, yet a heat transfer occurs from the source of the heat to the liquid making the liquid cooler. |
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Term
| Why does moisture evaporate from skin faster at higher altitudes? |
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Definition
| Moisture evaporates from skin faster at higher altitudes because lower atmospheric pressure caused from the compression of air molecules increases the temperature and overall kinetic energy of your skin molecules. From that, the moisture from your skin evaporates faster. |
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Term
Where on Earth would water boil at a lower temp?
higher temp? |
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Definition
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