Obtain 3 beakers and 3 paper towels. Take the mass of each of
the dry paper towels and record that mass in the data table.
Line the 3 paper towels along a table or counter so that they
are not touching each other.
Fill one beaker to the top with ice, a second beaker halfway,
and a third beaker a quarter full. Then fill the beakers up with
Carefully place the beakers on top of the paper towels being
sure not to spill any of the water.
Allow the beakers to sit for 10-15 minutes (depending on the
humidity). Observe the condensation developing on the outside of
the beakers. What do you see?
After the 10-15 minutes have passed, wipe each of the beakers
completely dry with the paper towels underneath. (Make sure you
don't dip the paper towels into the water or accidentally wipe a
Take the mass of the wet paper towels, and record those masses
in the data table. (Make sure that you record the masses of the
wet paper towels in the correct place to match up with the same
paper towel when it was dry.)
Subtract the masses to determine how much water was added to
the paper towels. Record this in the data table. Which paper towel
gained the most water? The one from the coldest beaker or the
Take the temperature of the three different beakers of water
and record these values in the data table.
Make a graph of Mass of Condensation vs. Temperature of Water.
What type of curve to you get? What kind of relationship is there
between temperature of water and the amount of condensation you
Because of the inverse relationship you may now want to have
the students graph 1/mass vs. temperature. This should give them a
nice linear graph to show that as temperature decreases, the mass
of the condensation increases accordingly.