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8th Grade Performance Task Student #1 |
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Iodine solution turns blue-black in the presence of starch. Glucose test strips turn green in the presence of the sugar glucose. |
Directions:
- Put your safety goggles on.
- Place a wax paper sheet over the test card.
- Place two drops of each solution on the wax paper over the circle
on the test card with the same letter.
- Dip the end of a glucose test strip in each of the three solutions.
Use a new strip for each solution.
- Record the COLOR of the glucose test strips on the data
table below.
- Add one drop of iodine solution to each solution.
- Record the COLOR of the solutions on the data table below.
- Blot the wax paper with a paper towel and wipe off the test
card. Throw any garbage into the waste cup.
- Using the data you have collected and the background information,
which solutions contain sugar?
In the space below, explain the reason for your answer.
- Using the data you have collected and the background information,
which solutions contain starch?
In the space below, explain the reason for your answer.
Go to Next Student Work
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