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15 Cards in this Set
- Front
- Back
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The name of the energy needed to melt or freeze 1 g of water at the freezing point is called....
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heat of fusion
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The name of the energy needed to condense or boil 1 g water at the boiling point is called...
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heat of vaporization
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While freezing or melting is occurring, does the temperature change?
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No
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While condensation or boiling is occurring, does the temperature change?
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No
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Where can you find the formulas with Hv or Hf and the values for Hv for Hf water?
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On your reference pages
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If you have a temperature change and you are trying to calculate the amount of heat needed to make that change, which formula do you use?
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Q = m Cp ΔT
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What does the symbol Cp mean?
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Specific Heat
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What does the symbol ΔT mean?
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Change in temperature
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Are the specific heats for all the states of water the same?
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No, you must use a different Cp value for each state of matter ... found on the reference pages.
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Which always take more energy if working with 1 g of substance-- melting or boiling?
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boiling -- Hv values are higher than Hf values.
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The energy between B & C is called ...
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heat of fusion
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The energy between D & E is called....
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heat of vaporization
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If this is water, what is the temperature change between C & D?
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100 C
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What are the states of matter for x, y, & z?
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solid, liquid, gas -- in that order
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What phase change is occurring from B to C?... and from D to E?
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melting
boiling |
