H Gizmos Worksheet CalorimetryLab

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GizmosName:Date:Student ExpicraticnCalorimetry LabDirections: Follow the instructions to go through the simulation. Respond to the questions andprompts in the orange boxes.Vocabulary: calorie, calorimeter, joule, specific heal capacityPrior Knowledge Questions (Do these BEFORE using lhe Gizmo.)1.The Lalin wordcaiormeans "heal,' and meter comes from the Greek word meaning "to measure." What doyou think a calorimeter does?Measure heal2.Where have you heard lhe word calorie before? What do you think a calorie is?I heard it when talking about food and daily calorie intake. Calories are something thatprovides energy and is unhealthy if taken too much.Gizmo Warm-upA calorimeter is an insulated container filled with a liquid, usually water.When a hot object is placed in the calorimeter, heat energy is transferredfrom lhe object to lhe water and the water heats up.Calorimeters can be used to find a substance s specific heat capacity. Youwill use lheCalorimetry LabGizmo to determine lhe specific heal capacitiesof various substances.1.On the SIMULATION pane, select Copper. Use the slider Io set its Mass to 200 g. Sei lhe Water mass to200 g. Check that the Water temp is set to 30.0=C and the copper's Temp is 90:C.Select the GRAPHtab. and click Play {►}. This is "Trial 1"A.What was the Final temperature of the copper and lhe waler?34.96:CB.How much did the temperature of the copper change?decreased 55.04°CC.How much did the temperature of the water change?Increased 4.96 '"C2.Specific heat capacity can be described as a substance's resistance Io temperature changes. Whichsubstance has a greater specific heat capacity, copper or water? Explain.

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Waler hadagreater specific heal capacity as it increased less than copper. Copper'stemperature changed by 55.04:C while water's temperature changed by 4.96cC.Activity A:Heat transferGet the Gizmo ready:•ClickReset ().IY f*1__Question: What factors determine how heat energy transfers between objects?1.Predict: In the Gizmo warm-up. you saw how 200 g of 90aC copper transfers heat to 200 g of 30.0CCwater.A.How do you think increasing the waters mass would affect the final temperalure?It would bring it down as the water would nol heal up as much because there aremore things to heal up.BHow do you think decreasing the copper's mass would affect lhe final temperature?Less copper would lead to a low temperature.C. How do you think increasing or decreasing lhe copper's initial temperature would affectlhe finaltemperature?Increasing itwouldincreaselhefinal temperatureDecreasing it would alsodecrease the final temperalure.2.Collect dala: UsetheGizmotodeterminethefinal temperatureforeach set-up listed below. Recordyourresultsinthe tables. For each experiment, you will compare your results tolheresultsyouachievedinTrial1 above. The final temp for that trial has already been filled oul for you. Notice that eachtime,only onefactor changes.Thechanged factor is shown in red.ExperimentCopperWaterFinal Temp.(°C)Initial Temp.(°C)Mass (g)Initial Temp.(°C)Mass (g)Changing mass90 °C2D0 g30.0CC200 g34.96 °Cof water90 °C2D0g30.0CC2,000 g30.54-CChanging mass90CC200 g30.0CC200 g34.96 °Cof copper90;C20 g30.0:C200 g30.54-CChanging initial90 °C200 g30.0CC200 g34.96 °Ctemp of copper100C200 g30.0CC200 g35.79cC

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31.65cC50=C2D0 g30.0CC200 g3.AnalyzeFor each factor listed in the chart above, explain how the final temperature was changed and whyyou think that change occurred.A.What was the effect of increasing the water's mass?Final temperature decreasesEiWhat was the effect of decreasing the copper's mass?Final temperature decreasesC. What was the effect of changing the initial temperature of the copper?Final temperature decreases4.Draw conclusions: The amount that the water's temperature increases depends on llhe mass of the waterand the amount of heal energy in the copper.A.How does changing the initial mass of the copper atfecl how much heat energy it has?Increasing lhe initial mass of copper also increases how much heat energy ithas.BHow does changing the initial temperature of the copper affect how much heat energy it has?Increasing the initial lemperalure of copper also increases the heal energy.5.Apply: Many gyms and health clubs have sleam saunas, which are small steam-filled rooms. Traditionally,steam saunas have a container of heated rocks. A small ladle of water is poured on the rocks in order tomake the sleam.A.Use what you have learned so far about heat transfer to explain how hoi rocks can be used Io makesteam?The hoi rocks' heat energy transfers to lhe water making it warm or hoi.BWhy do you Ihink only a small ladle-full of water is poured on the rocks at one time?To make the water become steam fasler than if all the waler was poured on thehot rocks al the same time.

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