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Ap Chemistry

Specific Heat

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Date Carbon Copy lab Specific Heat Capacity measures how much energy it takes to raise the temperature of a substance 1K (which is the same as 1 Celsius). We know this qualitatively as how quickly a substance heats up or cools down. In this lab you will calculate the specific heat of 2 different metals. Materials: 2 styrofoam cups, 1600mL beaker, 100mL graduated cylinder, 1 digital thermometer Metals in a boiling water bath: Zn,Cu, Steel, Al Procedure: 1. Measure either 150mL of water or 250mL of water using a graduated cylinder 2. Place water into styrofoam cup and take/record the temperature of the water 3. From the boiling water bath take 1 metal and place into your water (the Al goes into the 250mL, the rest go into 150mL ) 4. Stir the water in the cup and record the highest temperature. It may take several minutes. 5. Remove the metal from the cup and return to the instructor. 6. Repeat steps 1-5 until you have 2 trials for 2 different metals. Data Calculations: (show your work) For each trial. 1. Calculate heat gained by water using q=mCT 2. Calculate Cmatal using a=mCT Questions: 1. Why do the metals have different sized cylinders? 2. How do we apply the First Law of Thermodynamics in this lab? 3. Look up the accepted specific heat values for your metals. Calculate your percent error based on what you find