1. Look at these two nutrition labels
Warm-Up 3/17/14
Look at these two nutrition labels
Compare
them:
What are
some
differences?
similarities?

2. Debrief how Calories are determined in food. Agenda
Objective
Debrief how Calories are determined in food.
Agenda
Food Calorie Lab Debrief

3. Food Calorie Lab Debrief
1) Calculate ΔT
2) Use ΔT to calculate heat in joules from
q = cmΔT
Specific heat of water is 4.18 J/g.oC Mass is the volume of water you measured

4. Heat lost by food = Heat gained by water
Soda Can Calorimeter
Heat lost by food = Heat gained by water

5. Calculations Continued
Make another chart with calculated heat (joules) for each food, Calories (Cal), and Calories per gram of food (Cal/g)
4.184 J = 1 cal
1000 cal = 1 Cal

6. Post-Lab Questions What foods did not burn?
For the foods that did not burn, what happened to them?
Why do you think that is?
Which food had the greatest amount of Cal/g?
How does this compare to your hypothesis?
Was this surprising? Why?

7. Tutoring
4th Period – Rm. 401
5th Period – Rm. 402