SCIENCE 101 > GIZMOS > Phase Changes GIZMO ( VERIFIED ANSWERS, 100% CORRECT ) (All)
Student Exploration: Phase Changes Vocabulary: altitude, boil, boiling point, freeze, freezing point, gas, liquid, melt, melting point, phase, solid Prior Knowledge Questions (Do these BEFORE using... the Gizmo.) 1.A family from Minnesota turns off the heat and flies to Florida for a winter holiday. When they come home, all of their water pipes have burst. What do you think happened? The water pipes had frozen up and there was a lot of pressure in the pipes. Which caused the pipes to burst and make the family in Minnesota come home and find their pipes all bad. 2.Spaghetti takes about 9 minutes to cook at sea level, but about 14 minutes in the mountains. Why do you think this is so? I think that in the mountains it takes up six more minutes because of sea level. For example I think that there was more pressure in sea level so it cook's faster. In addition when you are higher from sea level it cooks slower. Gizmo Warm-up In the Phase Changes Gizmo™, select the Micro view and 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? The phase that molecules hold rigidly is when it is a solid. 2. In which phase(s) do the molecules move freely? The phases that molecules move freely is when it is a liquid or gas. 3. In which phase(s) are the molecules held in a defined shape? The phase that molecules hold in a defined shape is a solid. 4. In which phase(s) do the molecules take the shape of their container? The phase that take up the container is a liquid [Show More]
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