Heat capacity
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Heat capacity

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    Heat capacity Heat capacity Presentation Transcript

    • Mia and Devon are having a summer party. They need to make two sizes of ice. The large blocks of ice will be put in a cooler to keep cans of soda cold. The small ice cubes will keep the sodas in the glasses cold. They wondered how the temperature at which water freezes is affected by the size. Which statement below is true? A. Small ice cubes freeze at a lower temperature than large blocks of ice. B. Small ice cubes freeze at a higher temperature than large blocks of ice. C. Small ice cubes and large blocks of ice freeze at the same temperature.
    • ReviewReview Density Anomaly Ice floats  DMV
    • Heat CapacityHeat Capacity How much heat a substance can “hold” Water has a high heat capacity Water can “hold” a lot of heat
    • Heat CapacityHeat Capacity It also takes a lot of energy to heat water up Or to cool it down
    • Change of StateChange of State  Water exists in the liquid state in a very wide range of temperatures  Form 0o C to 100o C  In liquid form all over the world
    • Change of StateChange of State Water has extreme boiling/freezing points Boiling point: 100o C, 212o F Freezing point: 0o C, 32o F
    • Sensible HeatSensible Heat Heat is applied, the temp. increases but The state of matter stays the same “angled or curved” parts of the graph
    • Sensible Heat
    • Latent HeatLatent Heat Heat applied, the temp. stays the same but The state of matter changes “flat spots” on the graph
    • Latent Heat
    • Water’s 4 SpecialWater’s 4 Special Properties:Properties: 1. High Surface Tension 2. The Density Anomaly 3. High Heat Capacity 4. High Boiling Point/High Freezing Point