Frost Wedging Lab

2. Read the explanation, pre-lab, and results below.

3. Use the sample results shown below for your data. Complete the lab WS and hand it in.

Explanation: We determined the height of water in a test tube, then we froze the water in the tube, measured its new height, and determine how much it expanded (%).

Pre-Lab: We did these together.
1. Ice floats because it is less dense than liquid water. It is less dense because water molecules arranged in crystals take up more space than water molecules that are in the liquid phase.
2. To determine this first subtract 1650 from 1700. Next take this answer (50) and divide it by 1650 to get 3%.

Results:
height of water in test tube; 7.3 cm before freezing
height of ice in test tube: 7.8 cm cm

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