Page 215 - Microsoft Word - LessonPlan-Overview.doc

Dropping Beans

In this experiment, you will observe osmosis in beans.
1. Place enough beans and water in a glass to completely fill it

2. Place the glass on a cookie sheet
3. Leave the glass alone for several hours
Questions

1. The beans should begin to fall out of the water. If you look at them,
you will see that they have expanded. What happened? (Think about

osmosis.)
2. Where was the concentration of water greater – inside or outside of
the beans? Explain.

Carbon Dioxide and Photosynthesis

This experiment will demonstrate that carbon dioxide is necessary in
photosynthesis.

1. Take two young potted plants.
2. Apply petroleum jelly on two glass sheets.

3. Place the potted plants on these glass sheets.

4. On one glass sheet, along with the potted plant place a burning
candle.

5. In the other, place a dish containing caustic soda.

6. Cover them with the bell jars.

7. Leave undisturbed for a few hours and test the leaves from each pot
for the presence of starch using iodine solution.

© 2011 Supercharged Science www.ScienceLearningSpace.com

617