Question

This is a Lab Report about an experiment.

The experiment should be about HEAT and TEMPERATURE with any example.

Title:

Hypothesis: Statement that the experiment is going to test, prove, or disprove. What is the point of the experiment? (Make a statement that the experiment will either prove or disprove.)

Overview: Brief summary of what occurred in the experiment or what was tested and how.

Uncertainty&Error: Can you trust your data?

Considerations:

1) What factors may have affected or biased the data and introduced uncertainty in the lab measurements? Or, what conditions created uncertainty in your measurements? Which measurements were most affected?”

2) If you were conducting the lab in a physical environment, what other factors would have to be taken into account while accomplishing the procedures? How might they affect the data and/or experiment outcome?

Conclusion/Summary: This section must contain each of the items listed below. You are now the one speaking, of your personal results. Although this is merely an example, it does contain all the requisite components. You may write this section how you see fit, as long as the items annotated are included. However, a checklist or bullet list is not acceptable. The clarity and flow of your conclusion/summary should make clear to any ready what you did in the experiment and how it turned out.

Application: How does this topic—and science in general—impact our understanding of the complex, technological society of which we are a part? How does this explain something in the real world around you?

Answer 1

Title:  To determine the specific heat of two metal blocks

Hypothesis:When a body of mass M at temperature T1 receives an amount of heat Q, its temperature may increase from T1 to T2

Overview: The heat capacity (C) of a body is defined as the amount of heat required to raise its temperature of the body by one (Kelvin) degree

A vessel, called calorimeter, of known specific heat capacity S_c and mass m_c is partially filled with a mass m_w of water at a temperature T1 and then mounted in a suitable manner so that it is thermally insulated from the outside atmosphere. A mass M of the substance of unknown specific heat capacity c is heated to a higher temperature T_b and then quickly transferred to the calorimeter. The temperature of the calorimeter and the water contained quickly rises to a value T2. It then slowly begins to fall as heat is lost to the room. If all the masses are measured in grams, the temperatures in degrees Celsius and the specific heat capacities in calories per gram per degree Celsius, the block of substance has thus given M.c.(T_b - T₂) calories of heat to the calorimeter and the contained water. If no losses occur, this must be equal to the heat gained by them, which is (m_cS_c + m_w)(T2 - T1).

Thus: M.c.(Tb - T2) = (m_cSc + m_w)(T2 - T1)

and the specific heat c can be determined.

Uncertainty&Error: During the experiment you must take care of the following conditions

1)the system should be thermally insulated from the outside atmosphere

2)all the masses are measured in grams, the temperatures in degrees Celsius and the specific heat capacities in calories per gram per degree Celsius

3)Thermometer should be accurate

4)solid is placed in a cold liquid with which it has no chemical reaction

Conclusion/Summary: Heat lost by one body is equal to heat gained by other when they are brought in thermal contact

Application: Working of steam engines, power plants, automobile