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Lab2_follow_up_questions

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  • Do you think the temperature of the flame changed at any point during the experiment?

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  • Do you think that the amount of heat given off by the flame changed at any point during the experiment?

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  • Examine your graph. What does your graph look like for the first few readings?

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  • What does this tell you about what the temperature was doing during those readings?

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  • What was happening to the kinetic energy of the water molecules for those first few readings?

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  • Complete this sentence: “While the ice was melting, the temperature was _____.”

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  • The mass of the particles of water do not change when they are heated. Therefore, what can you say about the speed of the water molecules for the first few readings?

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  • What did you observe happening to the ice / water mixture for those first few readings?

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  • What does the rise in the graph indicate about the water’s kinetic energy?

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  • The mass of water molecules does not change when water is heated. Therefore, what kind of change are the molecules experiencing when the graph is rising?

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  • What can you say about the amount of ice left in the beaker when the temperature started to rise?

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  • After a while, your graph started rising. What does that indicate about what the temperature was doing?

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  • Complete the following sentence, “During a phase change, the temperature _________.”

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  • How are heat and temperature related?

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  • What could you see happening to the water for the last few readings?

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  • What do both flat spots on the graph have in common, in terms of what you saw happening to the water?

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  • What do both flat spots on the graph have in common, in terms of temperature?

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  • What do both flat spots on the graph have in common, in terms of molecular speed?

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  • Did the flame change at all when the temperature started to rise?

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  • Was there any change in the amount of heat produced by the flame when the temperature started to rise?

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  • If the heat was not being used to increase the temperature of the mixture, then what do you suppose it was being used to do to the mixture before the temperature started to rise?

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  • After the ice melted, what form of energy was responsible for the increase in the temperature of the water?

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  • As the temperature rose, what effect was the heat having on the molecules of water?

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  • After several minutes, your graph stopped rising and leveled off. What was happening to the temperature for these last few readings?

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  • What was happening to the kinetic energy of the water molecules for the last few readings?

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  • What was happening to the speed of the water molecules for the last few readings?

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