Gizmo warm up in the phase changes gizmo select the

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Introductory Chemistry: A Foundation
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Chapter 13 / Exercise 81
Introductory Chemistry: A Foundation
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Gizmo Warm-upIn the Phase Changes Gizmo™, select the Micro view set the Ice volume to 50 cc. Click Play() and observe molecules in the solid(ice), liquid(water), and gas(air) phases.1.In which phase(s) are the molecules held rigidly together?and
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Introductory Chemistry: A Foundation
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Chapter 13 / Exercise 81
Introductory Chemistry: A Foundation
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2.In which phase(s) do the molecules move freely?
3.In which phase(s) are the molecules held in a defined shape?
4.In which phase(s) do the molecules take the shape of their container?
Activity A: Phase changesGet the Gizmo ready: Click Reset() and select Macro view.Set the Water temperatureto 10 °C.Set the Ice volumeto 0 cc.Question: How is temperature related to phase changes?1.Predict: Based on your prior knowledge, predict the following:A.At what temperature will water change from a liquid to a solid (freeze)?
B.At what temperature will water change from a solid to a liquid (melt)?
C.At what temperature will water change from a liquid to a gas (boil)?
2.Investigate: Use the Gizmo to explore phase changes. Use the Add/remove heat energyslider to control the water temperature. Record your observations in your notes, then answerthe questions below:A.At what temperature does water freeze?
.B.At what temperature does ice melt?
.C.At what temperature does water boil?
.3.Observe: Set up the Gizmo to observe freezing. What do you notice about the temperature while the water is in the process of freezing?

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