Energy from food

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  • Created by: Lauran
  • Created on: 29-10-13 13:40
What is calorimetry?
Food can be burnt to see how much energy it contains
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What is the equation to calculate amount of energy in food?
Mass of water (g) x Temp change of ware (c) x 4.2
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What is the equation to calculate the amount of energy in Joules per gram?
Energy of food/Mass of food
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Describe the experiment of calorimetry...
Weigh a small amount of food (dry) and skewer it onto a mounted needle. Next add 25 cm^3 of water to a boiling tube (held by clamp). Measure temp of water, then set fire to food, using bunsen burner.Keep relighting and placing food under tube until
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(Describe the experiment of calorimetry...)
it will no longer light, measure temp of water again
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How can the accuracy of the calorimetry experiment be increased?
Insulate the boiling tube - minimize heat loss and keep more energy in the water
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Card 2

Front

What is the equation to calculate amount of energy in food?

Back

Mass of water (g) x Temp change of ware (c) x 4.2

Card 3

Front

What is the equation to calculate the amount of energy in Joules per gram?

Back

Preview of the front of card 3

Card 4

Front

Describe the experiment of calorimetry...

Back

Preview of the front of card 4

Card 5

Front

(Describe the experiment of calorimetry...)

Back

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