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Purpose:
To provide the student with a basic knowledge and understanding of the viral disease AIDS - Acquired Immune Deficiency Syndrome, which is caused by the HIV virus. The student will learn how the HIV virus is transmitted, by simulation of "body fluid" exchange. The activity is based on a simple chemical reaction involving a dramatic and unmistakable color change. The students will learn risk factors associated with HIV viral infection and how to prevent infection and spread of this disease. Note that this type of lab activity is also a part of the district AIDS curriculum.
Objectives Links:
Process Skills Checklist
Materials:
- lab write up
- 1 20 x 150 mm test tube with 75 mm colorless solution
- 1 beral type transfer pipette w/ extra large bulb
- colored pencils
- 3 drops of solution X - indicator
- compass or protractor
Safety Concerns:
Chemical goggles and aprons are to be worn at all times during this lab. A weak solution of sodium hydroxide will be used. Sodium hydroxide is corrosive; skin burns are possible; it can cause severe damage to eye tissue. At no time should pipettes be used by students to "squirt" each other. If skin or eyes come into contact with test tube solution flood area immediately with tap water. Phenolphthalein indicator solution is flammable. Do not use near heat or flame.
Revision Date:
Summer 2001
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