Specific Heat capacity of cork , metal, concrete , and glass beads PDF

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Specific Heat capacity of cork , metal, concrete , and glass beads Jodyann Munroe

Purpose The purpose of this experiment to tell calculate the specific heat of the following substances cork, metal, concrete, and glass beads.

Introduction The ability of any material to retain heat energy is called the material’s heat capacity. The specific heat capacity of a substance is the amount of heat required to raise the temperature of 1 g of the substance by 1 ℃ ( or by 1 K). This experiment will show how much energy it takes to heat up different substances such as the cork, metal, concrete, and glass beads. If after calculation the values are small it showed that little energy was needed to produce temperature change, whereas if the values are large, it indicated that a lot of energy was needed to produce temperature change.

Procedure After all the supplies were gathered, to begin the experiment 100mL of cold water was added into styrofoam cups. The mass of the cork, metal, concrete, and glass beads were taken. Afterward, all the objects were separated into containers, the cork and concrete were added into two separate beakers and the glass beads and a metal rod was added separately into test tubes. The beakers and the test tubes were then placed in a hot water bath making sure that they did not get wet. The objects were heated for at least 15 minutes in the hot water bath. The temperature of the cold water was recorded from the styrofoam cup. For the metal and the glass beads the objects were placed inside the cold water bath and covered quickly to avoid the escape of heat,

and the temperature was recorded while stirring the contents. When the numbers on the thermometer stopped changing this is the temperature of the water calorimeter itself and the object. In relations to the cork and concrete, the final temperature was taken by directly placing the thermometer to it and holding it there for a couple minutes waiting until it stops increasing.

Data

Metal mass: 18.108g Cork mass: 1.179 g Glass mass: 2.4594 g Concrete mass: 33.991 g Temperature of 100mL cold water: 18.3 ℃ Hot plate heated to 500 ℃ , 450 mL of hot water bath temperature: 76.3 ℃ Cold water bath: 19.0 ℃ Temperature of cold water bath metal: 21.6 ℃ Temperature of hot bath with glass: 101.4 ℃ Temperature of cold bath with glass: 18.2 ℃ Temperature of cold water for cork: 16.7 ℃ Temperature of cork initial: 93.1 ℃ Temperature of cork and cold water: 17.4 ℃ Temperature of cold water for concrete: 17.2 ℃ Temperature of concrete with cold water: 22.0 ℃ Temperature of concrete: 52.0 ℃

Calculations Written on a separate sheet of paper

Graphs 0

Conclusion Overall the specific heat of capacity for metal for -0.159 J/g ℃, for cork was - 0.049 J/g ℃, for glass was - 0.01826 J/g ℃ and for concrete it was -0.77922 J/g ℃. Upon conduction of the experiment, all the beakers would not fit in the hot water bath 3 test tubes instead of 2 had to be used to fix all the components in the bath. In terms of experimental error, the only mistake that was made was not quickly covering the calorimeter after the object was placed inside....