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Project
Resources Document
.
If you do not have the materials to complete this experiment, please contact your instructor.
Project 5: Rock Candy Lab Report
Name:
Nathalie Becerra Toledo
EXPERIMENTAL QUESTION:
How does the amount of sugar in a
supersaturated solution affect how soon crystallization occurs?
HYPOTHESIS – 10 pts
Think back to your hypothesis from the pre-lab quiz. Restate your hypothesis here and be sure to
read feedback that may have been left from your instructor. Remember to use an “If
……
,
then
……
.” statement.
Remember: You can get the hypothesis from the “Pre-Lab Quiz”.
So, If we Increase the amount of sugar in a supersaturated solution. It will slow down the
crystallization process.
MATERIALS – 5 pts
List the materials used in your experiment
.
1 cup water per candy solution
White granulated sugar or brown sugar
Crystal collectors, such as sticks , string or straws
4 solution containers , see through
Small saucepan
Measuring pan
Stove
Wooden spoon
Oven mitt
Funnel or ladle
PROCEDURE – 5 pts
Make a numbered, step by step list of short instructions describing how the experiment was
performed. The procedure should have enough detail so that another person could follow and
repeat the experiment.
1. Boil 1 cup of water in a small saucepan on medium heat.
2. Add 2.75 cups of sugar to the boiling water, ½ cup at a time, stirring until dissolved.
3. Let the sugar-water solution cool.
4. Set up the crystal collector in the solution container without touching the sides or bottom.
5. Carefully pour the cooled solution into the container around the crystal collector.
6. Allow the container to cool completely without disturbance.
7. Monitor the crystals daily for a week, noting observations.
8. Repeat steps 1-7 with 3 cups of sugar, then with 3.25 cups, and finally with 3.5 cups.
9. After a week, remove the crystal collector, break it free from crystals, and dry the rock candy on
wax paper.
RESULTS: Data Tables - 20 pts
Please record your data in the tables provided. You can edit these tables, if you need to, but you
must include all of your raw data from the experiment.
(Be sure to include
units
!).
Data Table 1: Sugar Amounts in Solution - 10 pts
Solution number
Amount added
1
2.75
2
3
3
3.25
4
3.73
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ANSWER
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