Topic: POLARITY OF WATER Materials: Balloon or comb Running Water Procedure: Rub the inflated balloon or comb in a piece of woolly or soft cloth. To check if the balloon or comb is ready, hold it close to your hair. If it attracts strands of hair, then you may proceed to the next step. If not, rub it again on the cloth. Hold the balloon or comb near a small stream of running water (e.g. water coming from a faucet) Observe what happens to the water. Briefly answer the following: What happens to the stream of water when the balloon or comb is placed near it? How does the polarity of water molecules relate to this phenomenon? Do you think that what you have observed will also happen if the fluid involved is cooking oil? Why?
Topic: POLARITY OF WATER Materials: Balloon or comb Running Water Procedure: Rub the inflated balloon or comb in a piece of woolly or soft cloth. To check if the balloon or comb is ready, hold it close to your hair. If it attracts strands of hair, then you may proceed to the next step. If not, rub it again on the cloth. Hold the balloon or comb near a small stream of running water (e.g. water coming from a faucet) Observe what happens to the water. Briefly answer the following: What happens to the stream of water when the balloon or comb is placed near it? How does the polarity of water molecules relate to this phenomenon? Do you think that what you have observed will also happen if the fluid involved is cooking oil? Why?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter24: Biochemistry
Section: Chapter Questions
Problem 20PS: If a drop of oleic acid is added to a dish of water, the oleic acid will spread out and form a layer...
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Topic: POLARITY OF WATER
Materials: Balloon or comb
Running Water
Procedure:
- Rub the inflated balloon or comb in a piece of woolly or soft cloth.
- To check if the balloon or comb is ready, hold it close to your hair. If it attracts strands of hair, then you may proceed to the next step. If not, rub it again on the cloth.
- Hold the balloon or comb near a small stream of running water (e.g. water coming from a faucet)
- Observe what happens to the water.
Briefly answer the following:
- What happens to the stream of water when the balloon or comb is placed near it?
- How does the polarity of water molecules relate to this phenomenon?
- Do you think that what you have observed will also happen if the fluid involved is cooking oil? Why?
- What is the importance of water’s polar characteristic to the environment? to living organisms?
- In the context of polarity of molecules, what does the statement “Like dissolves like” mean?
- Can you predict a compound’s polarity by dissolving it in water? Why?
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