Specific Heat Lab

What is the goal of this lab? What question is it trying to answer, or what problem is it trying to explain?

The room temperature was measured throughout the lab and kept constant at 24°C (+/- 1°C), as the lab was conducted during the same time of

Procedures: We set up an appropriate apparatus including a Styrofoam calorimeter cup containing room temperature deionized water, two thermometers, and a clean beaker also containing deionized water directly on a heat source. After heating up the water until its boiling point, we recorded the mass of each metal and carefully placed the selected metal inside the boiling water until the temperature of the water containing the metal was constant. Quickly, we placed the hot metal from the boiling water in the calorimeter cup containing room temperature water

Next are the methods that where done in this experiment. The materials used where: A digital Thermometer, human

The heat of light lab is used to test the temperature of the shades of light in order to understand whether the different shades have different temperatures. As for the purpose of figuring out whether the different shades of light have different temperatures there are many. One of which is so you can determine what temperature is ideal for household items like lightbulbs, or when taking photos. In addition another reason for this lab was to introduce concepts of light in order to have a better understanding of it. Though pertaining to experience this lab was used to introduce students to the lab process, and the tools needed for labs.

Temperature: Thermometer stayed in beaker during the experiment. Then we took it out to cool to room temperature (20 degrees Celsius) before repeating experiment at a higher room temperature.

The purpose of this experiment was to find the specific heat of zinc (Zn) metal. This was done performing the experiment. Using a coffee cup calorimeter filled with water you took the temperature of the water both before and after it was placed into the calorimeter. After taking the metal out it was massed.

Thermocouples measure the temperature from a thermoelectric effect which produces the temperature based on the voltage generated whereas the thermometer measure temperature by expanding or contracting with the temperature change. In addition to that, the thermometer is only used to measure the temperature of liquids. 2. A) When the hot metal was placed in the Styrofoam cup with the water, an endothermic reaction took place because the water was absorbing the heat released by the metal when placed in the water. The temperature of water before adding the metal was 23 degrees Celsius and when the metal was added it went to 25 degrees Celsius which means that the heat absorbed by the water made the temperature of the water rise.

The water was poured into the calorimeter cup then close the top and measured the initial temperature. Then the top was opened and 1gram of Ammonium chloride was pour into the cup, stirred the salt with the rod and once it reached plateaued the final temperature was recorded. The same process was done for the second salt Sodium thiosulfate. The step taken to reduce error in the experiment was to measure the content as accurately as possible and redo the calculation multiple times to make sure it is

In Lab A, the experiment said to mix equal masses of hot water and cold water. The initial temperature of the hot water was 64.6ºC while the initial temperature of the cold water was 12.9ºC. Mixing the two equal masses of water, the final temperature was 37.3ºC. In Lab B, the experiment said to mix equal masses of hot aluminum and cold water. The initial temperature of the aluminum cube was 60.7ºC and the initial temperature of the cold water was 6.1ºC. Mixing the two together, the final temperature reached 11.7ºC. The results of Lab A and Lab B differed because in Lab A, the experiment said to mix equal masses of the same substance, water.

first raise to a temperature of 29 degrees by immersion in water about room temperature. This

There is the term ‘surroundings’ which is used for the can itself holding the body of water, and for the room in which the practical experiment took place. It is known that any heat lost by the system must be absorbed by the surroundings, this is important for the surroundings referring to the room as it had much effect on the results. These effects are why the values in data and the consistency in the results have errors due to the calorimetry. The major calculations for calorimetry would be for the amount of heat absorbed by water. This is based off the calorimeter can’s surroundings of the water. The equation used

To determine the specific heat capacity of water by heating water and recording temperatures at regular intervals.

Firstly before the experiment begins ensure the apparatus has been set up correctly, i.e checking if all dials are in their correct position. After the apparatus has been set up, what should be done is the temperatures of the cold water in and hot water out should be noted down, this is done by reading the temperature gauges on the “cussons thermal conductivity apparatus”. After temperature of cold water in and hot water out has been noted you can move onto using the Thermocouple potentiometer to find the temperature of the water as it is heated through the metals and out of the metals. This can be done by putting the

To achieve this, the final value from each thermocouple was set to be equal to the warm water bath temperature (370C), and the initial reading was set equal to the ice water bath temperature. Thus, for each thermocouple an equation was obtained using the two points to convert voltage readings to temperature. An example of the calibration for one of the thermocouples is shown in Appendix II.