heat capacity metals
Heat Capacity Of Metal
Two different metals, heat capacity metals and lead, of equal mass are heated to the same temperature in a boiling water bath. The specific heat capacities of each metal is displayed to students: Al 0. The metals are added to two insulated cups or calorimeters, each containing the same amount of water initially at room temperature. Students are asked to predict what will capcity to the temperature of water and the temperature of the metals.
The temperature of the water changes by different amounts for each of the two metals. This demonstration assess students' conceptual understanding of specific heat capacities of metals.
If the accompanying computer animation is displayed students can gain a conceptual understanding of heat transfer between a hot sample of metal and the cool water heat capacity metals the particle level atom level. For each expompare the heat gained by the cool water to the heat released by the hot metal.
Compare the heat gained by the water in Experiment 1 to the heat gained by the water in experiment 2.
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The Law of Conservation of Energy is the "big idea" governing this experiment. A natural transfer of heat or heat flow from a region of higher temperature to a region of lower temperature until an equilibrium temperature is reached. Each different type of metal causes the temperature of the water to increase to a different final temperature.
This indicates that each metal has a different ability to absorb heat energy and to transfer heat energy. The ability of a substance to contain or absorb heat energy is called its heat capacity. Heat capacity ketals an extensive property—it depends on the amount or mass of the sample. Specific heat is a heat capacity metals of the heat capacity of a substance.]
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