Heat Conduction Along a Composite Bar

In this experiment, the results of the tested materials gave off heat and the change in the temperature was positive because when one substance was added to another the temperature increased. A calorimetric constant is required because the calorimeter that was made is different for every lab group.

In order to measure the heats of reactions, add the reactants into the calorimeter and measure the difference between the initial and final temperature. The temperature difference helps us calculate the heat released or absorbed by the reaction. The equation for calorimetry is q=mc(ΔT). ΔT is the temperature change, m is the mass, c is the specific heat capacity of the solution, and q is the heat transfer. Given that the experiment is operated under constant pressure in the lab, the temperature change is due to the enthalpy of the reaction, therefore the heat of the reaction can be calculated.

2. How did concentration and/or volume differences affect the heat change (q) for each trial?

2. Conduction heat loss by direct molecule to molecule transfer from one surface to another. (skin loses heat through direct contact with cooler air, water, or other surfaces)

Abstract: This experiment introduced the student to lab techniques and measurements. It started with measuring length. An example of this would be the length of a nickel, which is 2cm. The next part of the experiment was measuring temperature. I found that water boils around 95ºC at 6600ft. Ice also has a significant effect on the temperature of water from the tap. Ice dropped the temperature about 15ºC. Volumetric measurements were the basis of the 3rd part of the experiment. It was displayed during this experiment that a pipet holds about 4mL and that there are approximately 27 drops/mL from a short stem pipet. Part 4 introduced the student to measuring

To learn about the laws of thermodynamics and use thermodynamics formulas to calculate heat transfer

3. When heat flows from a warm object in contact with a cool object, do both objects undergo the same amount of temperature change?

Heat is a form of energy, sometimes called thermal energy, which can pass spontaneously from an object at a high temperature to an object at a lower temperature. If the two objects are in contact, they will, given sufficient time, both reach the same temperature. Heat always travels from hot to cold objects and two objects will reach an equilibrium temperature. Heat flow is commonly measured in a device called a calorimeter, an insulating container that minimizes heat exchange between its contents and the surrounding. Heat flow in a device called a calorimeter. In this experiment, we should find the heat capacity of the

To improve the experiment, the methodology could be improved by having an efficient calorimeter to retain as much heat as possible, rather than just a tin can. Additionally, more trials for each of the experiments could be conducted to ensure correct and precise data is collected to determine more accurate conclusions.

Cotton is a good heat insulator. In our thermal insulating test, we put three hundred milliliters of room temperature water into a pan. Then we placed four containers into the pan, three containers had different fiber samples and one was empty. The empty container was a control to compare back to. After recording the original temperatures, we added the ice cubes. We took the temperature of the cotton container and continued to do so every minute for ten minutes. The

Graph the power output of each square. Since power depends on the fourth power of the temperature, a small difference in temperature can cause a big difference in power output.

Compare heat transmission in different materials (e.g., conduction of heat in different solids, absorption of radiant heat by different

Now for the Heat Curve Lab. During the 12 minutes of heating the beaker of water and ice while reading the changes of its temperature of the thermometer sticking inside. It started out slow at first, but until about four minutes later the

Heat energy (or just heat) is a form of energy which transfers among particles in a substance (or system) by means of kinetic energy of those particles. Heat energy can be transferred by four different methods such as conduction, radiation, convection, and latent heat transfer. In conduction, the heat spreads through a substance when faster atoms and molecules collide with neighboring slower ones and it transfers some of their kinetic energy to them. A great example of conduction is when you can warm your back muscles with a heating pad. Radiation is the process where heat emanates from an object that

Since the Bi value of the aluminum system is less than 0.1, convection from the water to the surface of the cylinder is the rate limiting heat transfer mechanism. Thus, a lumped-parameter analysis can be safely applied. The Plexiglas system, on the other hand, has a Bi >> 0.1, and the rate limiting mechanism is conduction in the cylinder.