Calorimetry_Lab_Student_Expolartion: calorie, calorimeter, joule, specific heat capacity

1. The Latin word calor means “heat,” and meter comes from the Greek word meaning “to measure.” What do you think a calorimeter does? ____the measure of heat ____________________________ 2. Where have you heard the word calorie before? What do you think a calorie is? _________ It is a measurement of intake of burning when exercising of eating Gizmo Warm-up A calorimeter is an insulated container filled with a liquid, usually water. When a hot object is placed in the calorimeter, heat energy is transferred from the object to the water and the water heats up. Calorimeters can be used to find a substance’s specific heat capacity. You will use the Calorimetry Lab Gizmo to determine the specific heat capacities of various substances. 1. On the SIMULATION pane, select Copper. Use the slider to set its Mass to 200 g. Set the Water mass to 200 g. Check that the Water temp is set to 30.0 °C and the copper’s Temp is 90 °C. Select the GRAPH tab, and click Play ( ). A. What was the Final temperature of the copper and the water? 34.96 B. How much did the temperature of the copper change? 90-34.96=55.04 C. How much did the temperature of the water change? 34.96-30=4.96 2. Specific heat capacity can be described as a substance’s resistance to temperature changes. Which substance has a greater specific heat capacity, copper or water? Explain What factors determine how heat energy transfers between objects? Predict: In the Gizmo warm-up, you saw how 200 g of 90 °C copper transfers heat to 200 g of 30.0 °C water. Collect data: Use the Gizmo to determine the final temperature for each set-up listed below. Record your results in the tables. In the first table, you experiment with changing the water’s mass. In the second table, you change the copper’s mass. In the third table, you change the initial temperature of the copper. The first row of each table has been completed for you. Analyze: For each factor listed in the chart below, explain how the final temperature was changed and why you think that change occurred. Draw conclusions: The amount that the water’s temperature increases depends on the mass of the water and the amount of heat energy in the copper.