An Investigation on Burning Food

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An Investigation on Burning Food

Planning

Aim:

The aim of this experiment is to determine the effect of differing

amounts of fat in the food on the amount of energy per gram or 100

grams in the food.

Scientific Knowledge:

Here is the table of quantities of different nutrients in food:

Type of food

Sunflower seeds

Pumpkin seeds

Pasta

Plain crisps

Crisp bread

Dried peas

KJ energy in food

2518

2527

1470

2214

1280

1265

Protein in food

19.80

33

12

4.3

10.30

21.60

Carbohydrate in 100g

18.60

9

72

45.20

61.30

50.0

Fat in 100g

47.50

49

1

37

1.70

1.3

This table shows that the food with the most energy inside of it is

pumpkin seeds. They also contain the most protein but the least

carbohydrates and also contain the most fat than all the other foods.

The table also shows that dried peas has the least amount of energy

but does not have the least protein, carbohydrates or the least fat

compared to the other foods being used in the experiment.

One gram of fat produces twice as much energy as a gram of

carbohydrate or protein.

The temperature change in water is caused by the absorption of heat

given off by the burning of a known mass of food. Based on the change

in temperature, you can calculate the amount of energy in food.

If the room heats up more, this will not have an affect on the results

because the water is hotter and so the results will not be higher than

usual. It just means that the results will be the same but the initial

starting temperature of the water will higher.

Carbohydrates give off the most energy because they contain the

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