
Energy measurements in food
Presentation
•
Biology
•
9th - 12th Grade
•
Easy
Heather Shaw
Used 9+ times
FREE Resource
0 Slides • 6 Questions
1
Multiple Choice
Which measurement is not required to calculate the energy in a food sample?
Mass of food
Temperature change
Volume of water
pH
2
Match
Look at this calorimeter and match the following differences that help improve the validity of the results.
Pure oxygen used.
Stirrer used
Copper coiled pipe
Food burned in an insulated container
All food is burnt – complete combustion – results more accurate
To evenly distribute the heat – make sure all the water is the same temperature
More Surface area - more heat transferred to the water
Not as much heat energy is lost –temperature reading more accurate
All food is burnt – complete combustion – results more accurate
To evenly distribute the heat – make sure all the water is the same temperature
More Surface area - more heat transferred to the water
Not as much heat energy is lost –temperature reading more accurate
3
Multiple Select
What two factors should you control?
Volume/mass of water
Angle of tube
temperature
Distance of heat from tube
4
Multiple Choice
What is missing from this equation?
mass of food
temperature difference in °C
temperature difference
volume of water
5
Multiple Choice
What is missing from this equation?
mass of food
temperature difference in °C
temperature difference
volume of water
6
Multiple Choice
What is missing from this equation?
mass of food
Energy release in J
temperature difference
Energy release
Which measurement is not required to calculate the energy in a food sample?
Mass of food
Temperature change
Volume of water
pH
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