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Purpose:
1) To determine how different carbohydrates react to the Iodine and Benedict's tests
2) use the results to determine the type of carbohydrate found in given unknown materials.
Summary:
Students test a monosaccharide, disaccharide and polysaccharide using the Iodine test and the Benedict's test. By testing these substances, students will develop a chart for determining the type of carbohydrate. Students will then test various unknown substances and use the chart developed in the first part of the lab to determine the type(s) of carbohydrates present in each.
Objectives Links:
Process Skills Checklist
Materials:
- test tubes
- boiling water bath
- Iodine & Benedict's solutions
- samples of the three types of carbohydrates
- unknown carbohydrates
Safety Concerns:
Do not eat or drink. Be careful with glassware. Report all spills to teacher. Use caution with hot materials.
Revision Date:
Summer 2005
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