Calorimetry Lab Exercise
Access the Calorimetry lab exercise by clicking on the following web-link: http://www.classzone.com/books/hs/ca/sc/bio_07/virtual_labs/virtualLabs.html. Follow the step-by-step instructions for the lab exercise as described on the website.
Click on the Problem tab.
Read/Listen to the audio
Click on the Explore tab.
Click on each of the items in the lab that are on the checklist.
Read/Listen to the audio Select five food samples to compare in your experiment and drag them to the workbench.
Record in the Table for Predictions
Follow the procedures for determining the initial and final mass of a food sample and initial and final temperature readings for the water.
Record in the Table for Data Collection for Food Samples
Click on the Calculate tab and enter the required data to determine the Calories/gram (energy content of the food).
Record in the Table Energy Given Off by Food Sample (Cal/g).
Answer the Questions in the Analysis and Conclusion Section of the Lab Report below.
List the five food samples you’ve selected in order from fewest to greatest number of Calories per gram.
(1 being the fewest number of Calories per gram to 5 being the greatest number of Calories per gram).
Food Sample
Initial Mass of Food
(grams)
Final Mass of Food Sample
(grams)
Change in mass of Food (grams)
Initial Water Temperature (C°)
Final Water Temperature (C°)
Change in Water Temperature (°C)
Chicken
16.28
15.02
1.26
20.0
22.8
2.80
Orange
16.30
15.02
1.28
20.0
21.0
1.00
Chocolate
16.32
15.02
1.30
20.0
31.6
11.60
Broccoli
16.07
15.01
1.06
20.0
20.6
.60
Margarine
16.11
15.01
1.10
20.0
35.2
13.20
Energy Given Off by Food Sample (Cal/g) Table:
Food Sample
Change in mass of Food (grams)
Change in Water Temperature (°C)
Calories in Food Sample (Cal)
Calories per Gram (Cal/g) Orange 1.28
1.00
.6
.47
Margarine 1.10 13.20 7.92 7.2 Chocolate 1.30 11.60 6.96 5.35 Broccoli 1.06 .60 .36 .34 Chicken 1.26 2.80 1.68 1.33
Data Analysis and Conclusions:
1. Rank your data according to you results from the experiment below:
Results Table:
List the five food samples you’ve selected in order from fewest to greatest number of Calories per gram.
