Specific heat of a metal lab conclusion. Specific Heat Lab Conclusion 2022-10-26
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In a Specific Heat of a Metal lab, the purpose is to determine the specific heat of a metal by measuring the temperature change of both the metal and water as heat is transferred between them. The specific heat of a substance is a measure of the amount of heat required to raise the temperature of a given mass of the substance by one degree Celsius.
To perform the lab, a metal cylinder is placed in a calorimeter filled with a known mass of water at a known temperature. The metal is then heated to a higher temperature and placed in the calorimeter. As the metal cools down to the temperature of the water, heat is transferred from the metal to the water, causing the temperature of the water to rise. By measuring the temperature change of both the metal and water and using the heat transfer equation, the specific heat of the metal can be calculated.
One of the key sources of error in this lab is the accuracy of the temperature measurements. It is important to use a thermometer with a high degree of accuracy and to take multiple temperature readings to minimize the potential for error. Additionally, the heat transfer equation assumes that all of the heat transferred from the metal to the water goes into raising the temperature of the water, but some of the heat may be lost to the surroundings through conduction or convection. This can also introduce error into the final calculation of the specific heat.
In conclusion, the Specific Heat of a Metal lab is a valuable tool for determining the specific heat of a metal. By accurately measuring the temperature change of both the metal and water and using the heat transfer equation, it is possible to calculate the specific heat of the metal with a reasonable degree of accuracy. However, it is important to take care to minimize sources of error, such as the accuracy of temperature measurements and heat loss to the surroundings, in order to obtain reliable results.
Lab for Specific Heat
There are two different kinds of reactions involving this law, endothermic and exothermic reactions. This explains why energy cannot be created nor destroyed. Heat flows between the system and surroundings until the two are at the same temperature, when a chemical reaction occurs in which the system absorbs heat, the process is endothermic it feels cold. For each metal, wechanged the boiling temperature, room temperature, and quantity of water in the room temperature container. The energy or heat unit of the Joule was named after him.
The difficulty in this report was obtaining the background information on the subject of specific heat. Last, Zinc was much farther of by being 0. Since we know that heat energy is related to temperature change by: you can calculate the specific heat of the metal. Weigh the Calorimeter again with the cold water in it and record it. The specific heat a reactions is used to refer to the amount of heat that is lost or gained when one gram of a particular substance increases or decreases by one degree Celsius.
Alternatively, the dependent variableswerethe final metal temperature and the room temperature water. Weigh Calorimeter again with the cold water. Chemistry the Central Science, 10 th ed. Once it has reached a peak in temperature, record the results Record the results for each trial when changing metals. The highest temperature of the water in the calorimeter was then recorded.
Specific Heat of Aluminum: Lab Report on Testing Experiment: [Essay Example], 1319 words GradesFixer
Next weigh each unknown metal and record data Mass of Metal. The heat that was absorbed by the metal is measured by the temperature change the metal causes in the room temperature water. Then place the stacked cups in the 450mL beaker. Our least accurate calculation was when we tested Zinc. In order to test some of these methods, thermal expansion, density, and specific heat were used to identify two small metal rods. Weigh the Calorimeter and record the weight in your lab notebook.
The piece of metal is then taken out of the boiling water and placed in a calorimeter which contains room temperature water. For Copper we were even closer with 0. Then place the stacked little cups upside down on top of the big stacked cups. The most enjoyable part of the whole report would be the experiment itself and the calculation of the data section. This shows that our data was more consistent on the first two tests because our data was much more accurate with the values given. The specific heat of a substance represents the amount of heat required to raise a particular mass of a substance through a particular temperature difference.
Last calculate the percent error and record the data. The temperature of the water in the beaker and the water placed in the calorimeter was recorded. Quickly remove a test tube from the heated beaker and place the metal into the calorimeter. The independent variable was the heat from the boiling water. An example of an endothermic reaction is the melting of ice. This seemly simple task is, however, can be quite complex, as there are many ways by which one can identify a metal, each with varying amounts of accuracy.
The Specific Heat of Different Metals: A Comparative Experiment: [Essay Example], 686 words GradesFixer
I think that we were able to be more exact with our calculations because we used direct measurements and were not calculating as much that could have human error. Many sources gave different points of view and caused conflict with writing the procedure. The lab also uses distilled water, which is water purified by a process of heating and cooling. It also enforced methods of analyzing data obtained through experimentation and calculating enthalpy. My hypothesis was that the metals specific heat and the final temperatures were directly proportional. A calorimeter is a device used to determine the specific heat of chemical reaction or a physical change. Record the mass of the metal in your data table.
It was proved that lead was the medal in the lab and it was identified using specific heat Calorimetry And Specific Heat Lab Report In this experiment, the specific heat and the density of an unknown metal was determined in order to identify the unknown metal. Although both calculations were independent from the mass of the aluminum recorded, trial 2 had a significantly lower specific heat than trial 1. Weigh the 2 metal cylinders together 2. The only reason why our trial spiked in the first trial was because we might have not been as familiar with the equipment and the important parts that could cause error. Place the metal from the boiling water into the room temperature water. The metal was then taken out of the water quickly and placed into the calorimeter.
An example of an exothermic reaction is the boiling of water. When we did the specific heat test for Tin, we were only 0. Although trial 1 had a percent error of 9. Using the calculations from the lab, the students were then able to calculate the actual specific heat obtained from the lab and compare it to the accepted value. If you were going to repeat this lab, what could you do to improve your results? Ideally, the quantity of water, the boiling water, and the room temperature water would be constant but since we did the experiment over multiple days, these became variables.
