Heat Exchange Laboratory
Objective: To examine how heat is transferred between two
objects of different temperatures. In
order to do this, students will measure and record temperature of two containers
of water over 30 second intervals. After making measurements, students will
analyze their results.
Procedure:
--Fill a beaker with 100 mL of cool
water from the front of the room.
--Fill a small plastic container 2/3
fill of hot water.
--Record the initial temperature of the
water in small plastic container and record in your composition book.
--Record the initial temperature of the
water in your beaker and record in your composition book.
--Place the small plastic container
in your beaker and make sure the water from the beaker does not go in your
plastic container.
--Record the temperature of each
container every 30 seconds in your composition book until the two temperatures
are nearly the same.
--Graph the two temperatures in
different colors in your composition book using two different colors. One color
for the temperature in the beaker, a second color for the temperature in the
plastic container.
--On the x-axis graph the time (in
seconds) and on the y-axis graph the temperature (in Celsius).
Data: (REMEMBER TO USE UNITS!)
Plastic container: Beaker:
Initial temperature: ______ Initial temperature: _______
30 seconds: _______ 30 seconds:
________
1 minute: _______ 1
minute: _______
1 minute, 30 seconds: _______ 1 minute, 30 seconds:
________
2 minutes: _______ 2 minutes:
_______
And so on until the temperatures are
similar
Graph: 
Temperature
(units)
Time
(units)
Post-Lab Questions:
1. How can you tell that the energy
is transferred? Is energy transferred to or from the hot water?
2. Predict what the final
temperatures would become after a long time. Why do you think this?
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