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Transcript

Water's Properties

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What do you have to do?

  • watch 3 videos, refer to the reading
  • Make 3 explanations showing how each of the experiments worked

Water & The Penny

Project is due tomorrow night!

Worth 100 points

Why does water look "bulbous" over the penny?

  • Surface tension of water
  • Water molecules are being pulled inwards
  • Forms a strong "skin" at the surface

Water & Plastic

How does it work?

Key Idea

  • Opposites attract, like charges repel
  • Positive side of water molecules attracted to negative spoon
  • Water is sticky because it is polar
  • Water has positive and negative side

What are we doing today?

1. Time to work on the project (due Wednesday)

2. Help with Explanations

Water & Pepper

How did it work?

  • Water is sticky and sticks to the pepper & makes it float

  • Soap breaks the surface tension
  • Water molecules move away from the soap & pull pepper with it
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