investigation 4 2 liquid expansion 2010
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Vocabulary• Compression: the decrease of gas
volume as a result of applied force• Contraction: the decrease of volume
due to decreased kinetic energy• Expansion: the increase of volume
due to increased kinetic energy• Kinetic energy: the energy of motion
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Can a liquid be compres
sed?
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We’ve got 3 minutes to burn . . .
•How was the behavior of the water in the syringe different from the behavior of the air in the syringe?•Why do you think water can’t
be compressed?
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Now we’ve got 5 minutes. . .
• What happened to the volume of air and the solid sphere when we heated them?
• What caused them to expand? Be detailed?
• What happened to the volume of air and the ring when they were placed in the cold water? Why?
• What happened when you placed your bottle system in cold water? Why?
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• If I turn the bottle upside down?• If I surround the
bottle with a hot cloth while upside down?• Why?
What will happen?
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Why does water expand?
• Water is made of water particles that are very close together and always moving over and around one another• When the kinetic energy increases (as a
result of added heat), the space between the particles increases• Increased space between particles
results in an increased volume
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Homework
•Finish questions on Heating and Cooling Water A & B
•Reflection:–Provide illustrated examples of vocabulary terms