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315 Specific Heat Capacity
1. Does a substance that heats up quickly have a high or a low specific heat capacity? Explain.



2. Does a substance that cools down quickly have a high or a low specific heat capacity? Explain.



3. Why will a watermelon stay cool for a longer time than sandwiches when both are removed from
   the same cooler on a hot day?



4. The desert sand is very hot during the day and very cool at night. What does this tell you about
   sand’s specific heat?




Use the table below to answer questions 5-8
                                        5. The same amount of heat is added to a sample of glass and a
                                            sample of iron. If the samples have the same mass, which one
                          o
Substance           cal/g/ C                will reach the higher temperature? Explain why.

Water              1.000
Wood (typical)     0.400
Soil (typical)     0.250               6. The temperature of a sample of iron and a sample of aluminum
Air                0.250                  are each raised 10°C. If the samples have the same mass, which
                                          one required more heat? Explain why.
Aluminum           0.215
Marble             0.205
Glass (typical)    0.200
Iron/Steel         0.108
                                       7. Find the heat (in calories) involved when raising 150g of water
Copper             0.0924                 from 20°C to 70°C. Was the heat gained or lost by the water?
Silver             0.0564
Mercury            0.0330
Gold               0.0310
Lead               0.0305

8. Find the heat (in calories) involved when cooling 20 g of aluminum from 95°C to 90°C.

				
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