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Gummi Bear Lab Instructions

Purpose: practice measuring and predicting

Problem: What will happen if a gummi bear is placed in tap water overnight? Students should provide plausible predictions of what will happen.

Materials:
1 gummi bear per student group
20 mL cold tap water
cup to hold water
metric ruler
data sheet

1. Measure the mass, length, width and height of a gummi bear.
2. Calculate the volume and density.
3. Place the gummi bear in 20 mL of cold tap water and allow them to sit overnight
4. Repeat the measurements and calculate the percent change in mass and volume.
CAUTION: BEARS WILL BE FRAGILE HANDLE WITH CARE.

Discuss why the bears change shape. Determine any faults with data.