Obstructive Properties of Tar

An Experiment

What to do first …1. Place the funnel in the

jar.

2. Line the funnel with filter paper

3. Pour water into the filter. Note how quickly it flows.

http://www.chem.ubc.ca/courseware/154/tutorials/exp4A/crufilt/crufilt-gravity.jpg

Try this next …1. Remove the wet filter paper from

the funnel.

2. Get a dry piece of filter paper.

3. Spread a thin layer of molasses on one side. Place this filter in the funnel.

4. Pour water into the funnel.

Compare your findings:

• Did you notice how quickly the water flows through the filter paper?

• Notice how slow the water flows through the coated paper.

Think about it …• Think about the filter paper

representing your lung tissue, and the water representing oxygen.

This image represents a year’s worth of tar from smoking 1 pack of cigarettes per day . http://www.healthconnection.org/temp/new/product_1521_1847.html

•The molasses that you used in the second half of this experiment represents the tar found in tobacco products, like cigarettes and cigars.

http://www.mamashealth.com/images/lungs1.gif

• In healthy lungs, the oxygen is able to pass through the lung tissue easier and is available for use by your body.

http://www.lungusa.org/site/pp.asp?c=dvLUK9O0E&b=22577

• Lungs that are coated with tar do not allow oxygen exchange as well as healthy lungs without tar.

www.smokerslungs.com/smokers-lungs-12.jpg