Purpose: To use indicators to test for the presence of organic compounds in certain substances.
Hypothesis: Honey will contain sugars, egg white contains proteins, corn oil contains lipids, oats contains starches and proteins, gelatin contains sugars and proteins, potatoes contain starch, and apple juice contains lipids and sugars.
Materials: 9 test tubes
Test tube rack
Test tube holder
Grease pencil
Hot plate
20 ml honey solution
20 ml egg white and water mixture
20 ml corn oil
Oats and water
20 ml gelatin and water solution
20 ml potato and water mixture
20 ml apple juice and water mixture
20 ml unknown substance #1
20 ml unknown substance #2
Paper towels
600 ml beaker
Brown paper
Biuret reagent
Benedict's solution
Iodine solution
Procedure: 1. Place test tubes in the test tube rack. Use the grease pencil to label each test tube based on the substance that will be placed in them.
2. To test for starches,......
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Approximate Word Count: 730
Approximate Pages: 3 (260 words per double-spaced page) |