Name_______________
Specific Heat Capacity
Date___________B____
Another unique property of water is that it has a very high _________________________________.
This means that water can ____________ and ______________ large amounts of _________ as it
is heated or cooled. However, these large changes in energy only result in ___________ changes
in _________________. In other words, water resists changes in temperature. This is because in
before you can make the molecules move ____________ the hydrogen bonds between them have to
be _____________. Therefore, when you heat water most of the energy actually goes into breaking
the hydrogen bonds. Water’s high specific heat helps to stabilize your body’s __________________
and the Earth’s different ____________ within a suitable range for life.
Specific heat is defined as:
Equation
Variable
Units
A little chemistry algebra!
Solve for m
Solve for Cp
Solve for Δ
Example Problem: A sample of water releases 2510.4 J of energy as its temperature goes from
26°C to 23°C. What is the mass of this sample of water?
 List data
 Re-arrange Equation
 Solve (estimate & check units)
Specific Heat Capacity
ClassworkHW
Name_______________
Date___________B____
1) How much energy is needed to raise the temperature of a 55 g sample of aluminum from 22.4°C
to 94.6°C, if Cp of Al = 0.897 J ? [Answer = 3,562 J]
g C
 List data
 Re-arrange Equation
 Solve (estimate & check units)
2) It takes 142.2 J to raise the temperature of 34.0 g of ammonia, NH3 (g), from 23.0°C to 25.0°C.
Calculate the specific heat (Cp) of ammonia. [Answer = 2.1 J ]
g C
 List data
 Re-arrange Equation
 Solve (estimate & check units)
3) 50.0 grams of water heats up from 24°C to 29°C. How much energy is absorbed by the water?
 List data
 Re-arrange Equation
 Solve (estimate & check units)
4) 100.0 g H2O loses 5020.8 J of energy as it cools. What is the change in temperature? [Ans. 12°C]
 List data
 Re-arrange Equation
 Solve (estimate & check units)