Which dissolves faster? Launch Lab LESSON 2: 15 minutes

Name
Date
Launch Lab
Class
LESSON 2: 15 minutes
Which dissolves faster?
Has anyone ever told you to take small bites and chew your food thoroughly? The size of
chewed food particles can affect how quickly food is digested. Similarly, the size of a sugar
particle can affect how fast it dissolves in water.
Procedure
1. Read and complete a lab safety form.
2. Add the contents of one serving
package of granulated sugar to a
500-mL beaker containing 300 mL of
warm water.
3. Gently stir the contents of the beaker
with a plastic spoon. Have your
partner use a stopwatch to time how
long it takes the sugar to dissolve.
Record the time below.
4. Add a sugar cube to another 500-mL
beaker containing 300 mL of warm
water.
5. Repeat step 3.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Data and Observations
Think About This
1. Which dissolved faster—the granulated sugar or the sugar cube?
2. Why do you think particle size affects the rate at which sugar dissolves?
3.
Key Concept How might food-particle size affect how quickly food is digested?
Digestion and Excretion
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