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LEQ: What are the properties of water?

LEQ: What are the properties of water?. Assignment: Reading 2.2, 32.1 Activator: glaciers What are your opinions on global warming? Later: summarize how ice can be used as a biological record of history Key terms – cohesion, adhesion, solvent.

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LEQ: What are the properties of water?

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  1. LEQ: What are the properties of water? Assignment: Reading 2.2, 32.1 Activator: glaciers What are your opinions on global warming? Later: summarize how ice can be used as a biological record of history Key terms – cohesion, adhesion, solvent

  2. Hydrogen bonds are responsible for unique chemical properties. • Chemical properties: • cohesion • sticks to itself • adhesion • sticks to other things • versatile solvent • “universal”

  3. Physical properties: States: liquid, gas Solid – ice formation Floatation! Specific heat stays cool, hot stores energy moderates temperature boiling, freezing Surface tension elastic (next slide)! capillary action Hydrogen bonds are responsible for unique properties:

  4. Possible sentences: Pretend that you are writing to a person who has little or no scientific expertise: Explain to them the significance of water to life on Earth using three vocabulary terms or less Clarify any term you use by providing an example, analogy, etc. Share your responses with your group

  5. Summary: • List three properties of water: • Explain how hydrogen bonds contribute to these properties

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