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A Closed Environment Student Record Sheet
Directions:
Set up a table like the one below to record your data. You will be recording
the color of the solutions each day.
Table # 1 Solution Color for Test Tubes with Water Only.
Table # 2 Solution Color for Test Tubes with Bromthymol Blue
Reflections.
After collecting data, reflect on these questions:
1. Which test tubes were used as controls?
2. What causes the bromthymol blue solution to turn yellow?
3. For each test tube, explain what effects cause the final observed
changes.
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