Lab Activity Sheet

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The students will complete a lab for the heating curve of water.
Materials list:
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lab safety gear: apron, glasses, hair pulled back and tied
Six hot plates
six 500 ml beakers
crushed ice
ring stand/clamp for thermometer
6 thermometers
timers
graph pape
notebook
Lab Activity:
1. Students begin with a beaker 3/4 full of crushed ice. Place beaker on hot plate and adjust
thermometer in clamp so that it is not touching the bottom and is about 2.5 cm (1 in.)
from glass bottom. Turn hot plate to medium heat setting.
2. Have a student timer and data record temperatures at 2 minute intervals.
3. Record any other physical observations like boiling or the generation of steam.
4. Note temperature during phase changes, e.g. when this happens and for long.
5. Continue until a rolling, steady boil and water is clearly evaporating.
6. Observe for another 2 minutes.
7. Turn off hot plate and return to tables. Allow water to cool. (Best for teacher to pour hot
water out using thermal gloves).
8. With the graph paper provided, each student will graph the time (x) and temperature (y)
data recorded for the heating curve.
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