Explain why surface tension applies only to liquids.
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Question No. 3
Explain why the air pressure inside a soap bubble is greater than the surrounding pressure.
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Question No. 4
What are forces of cohesion and forces of adhesion?
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Question No. 5
How does surface tension change as a liquid is heated?
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Question No. 6
What does ‘viscostatic’ mean?
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Question No. 7
What does ‘lumen’ mean?
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Question No. 8
What is the contact angle between pure water and clean glass?
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Question No. 9
If the contact angle between a liquid and a solid is 90º, what effect would this have on the behaviour of this liquid in a narrow tube made of that solid?
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Question No. 10
Using your own words, and good English, explain why surface tension is important in the lungs.
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Question No. 11
What is ‘viscosity’?; In what units is it measured?
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Question No. 12
In general, how do viscometers work?
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