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Catalyst

Catalyst. Explain the type of volume and shape that a solid, liquid, and gas have. Science theater video. Liquid nitrogen. You decide to boil water to cook noodles. You place the pan of water on the stove and turn on the burner

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Catalyst

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  1. Catalyst • Explain the type of volume and shape that a solid, liquid, and gas have

  2. Science theater video • Liquid nitrogen

  3. You decide to boil water to cook noodles. You place the pan of water on the stove and turn on the burner • How does the behavior of the water molecules changes as the pan of water is heated? • What about your answer to the question above would change if there were more water in the pan?

  4. Eureka videos • Video #20 • Video #21

  5. Which would feel warmer to the touch- a bucket of water at 50oC or a bathtub filled with water at 25oC? Which of these contains more energy? Account for any differences in your answers to these questions

  6. Suppose someone in your class said that when water freezes, it is because the molecules get cold and turn hard. Provide a better explanation for this in terms of the motion of molecules and the attractions between them

  7. When asked, “ What is between the molecules in liquid water?”, a student replied that water filled in the spaces. Is this answer correct? Explain

  8. In what ways are liquid water and water vapor the same? How are they different?

  9. Describe the energy transfers and the motion of the molecules involved in the following scenarios • You take a gallon of milk from the refrigerator and place it on the kitchen table • You move fresh baked apple pie from the oven to the kitchen table

  10. If both of the milk and pie from the previous question were left on the side table what would happen to their temperature given enough time? Explain why.

  11. What PHYSICAL change of a substance enables a thermometer to work? Describe it fully.

  12. Ideas of energy

  13. Expectations for tomorrow • You will be working on a lab • You will COMPLETE the lab by the end of class • You will still have a quiz on Thursday

  14. Thursday’s quiz • Solids, liquids, gases- shape of particles • Heating and cooling curve • Change in energy • No change in temp during phase changes • Define melting point, freezing point, condensation, boiling point • Explain what is happening to the molecules when you go from one state to the other

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