1. Make up Calorimetry Lab … get the lab tables & question packet from your teacher first.

2. Purpose: The purpose of this lab is to learn how the number of calories are calculated using foods.

3. Background Information The unit of heat measurement is called a calorie calorie = the amount of energy to heat 1 gram of water 1 ˚C Calorie = 1000 calories / 1 kilocalorie / (Food calorie)

4. The equation used to calculate this is…. calorie = m water C ∆ T m = mass water C = specific heat of water T = temperature in ˚C

5. Procedures Collect all of your materials at your desk. Mass each of your three foods and record your data in the table 1.

6. Set up your equipment shown in the pictures.

7. Measure 100 mL of water and pour it into the soda can. Measure the temperature and record in table 1.

8. Light your food on fire and allow to burn completely…… if it goes out then relight until it is burned. When it goes out record the temperature of the water now and every 30 seconds for the next 2 minutes.

9. Mass what is left of your burnt food item. Record the mass in your table.

10. Using the table below, calculate the ∆T and change in mass. Record your information on the table in the lab.

11. Using the equation: calorie = m C ∆T calculate and complete the following table in your lab writeup.

12. Using the “given” caloric values for each food used calculate the percent error for each food. Use the equation: % error = given value – calculated value ______________________ X 100 given value

13. Graph the average kcals/g side-by-side with the “given” values for each food. Use the following set up for your graph. Title – Figure 1: Average kcals/g for foods X axis – food types Y axis – average kcals / g

14. Complete the questions for the lab and hand the completed lab into your teacher.