Peanut Burning Lab
Burning peanuts to simulate cellular respiration
This lab will be assessed on Conclusion & Evaluation.
Aim
To determine the average energy content of 1g of peanut.
Method
1. Set up a clamp stand so that it is holding a 100cm3 beaker.
2. Using a measuring cylinder, pour 50cm3 of water into the beaker.
3. Use a thermometer to record the temperature of the water.
4. Place some aluminium foil over the beaker to prevent heat loss.
5. Record the mass of a peanut using an electronic balance.
6. Use a mounted needle to carefully pierce the peanut.
7. Get the peanut burning in a Bunsen flame and hold the burning peanut directly beneath the beaker of water until it goes out.
8. Record the temperature of the water immediately and record the mass of the remains of the burnt peanut.
Data collection
Record your data in a suitable format.
Data processing
Calculate the energy content of the peanut.
E = m x c x where E = energy gained by the water m = mass of the water c = specific heat capacity of water J/g find and site = temperature change of the water
Task
Record the raw data in an appropriate manner and present it clearly, allowing for easy interpretation.
Process the raw data using the calculation given above.
Draw valid conclusions and compare your results with literature values.
Evaluate the procedure used and suggest improvements to the method.
Conclusion and Evaluation (CE)
Concluding
Evaluating procedure(s)
Improving the investigation
c = 2
States a conclusion, with justification, based on a reasonable interpretation of the data.
Evaluates weaknesses and limitations.
Suggests realistic improvements in respect of identified weaknesses and limitations.
p = 1
States a conclusion based on a reasonable interpretation of the data.
Identifies some weaknesses and limitations, but the evaluation is weak or missing.
Suggests only superficial improvements.
n = 0
States no
This lab will be assessed on Conclusion & Evaluation.
Aim
To determine the average energy content of 1g of peanut.
Method
1. Set up a clamp stand so that it is holding a 100cm3 beaker.
2. Using a measuring cylinder, pour 50cm3 of water into the beaker.
3. Use a thermometer to record the temperature of the water.
4. Place some aluminium foil over the beaker to prevent heat loss.
5. Record the mass of a peanut using an electronic balance.
6. Use a mounted needle to carefully pierce the peanut.
7. Get the peanut burning in a Bunsen flame and hold the burning peanut directly beneath the beaker of water until it goes out.
8. Record the temperature of the water immediately and record the mass of the remains of the burnt peanut.
Data collection
Record your data in a suitable format.
Data processing
Calculate the energy content of the peanut.
E = m x c x where E = energy gained by the water m = mass of the water c = specific heat capacity of water J/g find and site = temperature change of the water
Task
Record the raw data in an appropriate manner and present it clearly, allowing for easy interpretation.
Process the raw data using the calculation given above.
Draw valid conclusions and compare your results with literature values.
Evaluate the procedure used and suggest improvements to the method.
Conclusion and Evaluation (CE)
Concluding
Evaluating procedure(s)
Improving the investigation
c = 2
States a conclusion, with justification, based on a reasonable interpretation of the data.
Evaluates weaknesses and limitations.
Suggests realistic improvements in respect of identified weaknesses and limitations.
p = 1
States a conclusion based on a reasonable interpretation of the data.
Identifies some weaknesses and limitations, but the evaluation is weak or missing.
Suggests only superficial improvements.
n = 0
States no
Bibliography: "Specific Heat." Specific Heat. N.p., n.d. Web. 03 Feb. 2014. . USDA. "Show Foods." Show Foods. USDA, n.d. Web. 04 Feb. 2014. .