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Aim : To measure the energy value in different types of food, which are macaroni, bread, spaghetti, rice and French fries

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Introduction

Diploma Programme CHEMISTRY INTERNAL ASSESSMENT Name : Ryanica Class : 12H Date : Tuesday, 27th October 2009 Title : Measuring the Energy Value in Food Topic : Energetics IA : 20 Aim : To measure the energy value in different types of food, which are macaroni, bread, spaghetti, rice and French fries Hypothesis : The energy levels in different food will vary, because of the different components such as carbohydrate, protein, vitamins, etc. However, for this experiment, I will use foods that contain one common ingredient, which is carbohydrate. Usually, food with the most carbohydrate will give the most amount of energy, since that is undetermined in this experiment; I assume that the food with the highest energy level is the one with the most types of ingredient. ...read more.

Middle

4. Place the food on a metal spoon and light it on fire using a Bunsen burner. 5. When the food starts burning, place it 1 cm below the test tube, if it goes off, light it as soon as possible. 6. When the food stops burning, measure the temperature of the water in the test tube and note it down. 7. Repeat the experiment for 2 more times for each food sample. Recording Raw Data : Table of Initial and Final Temperature of Water for Each Food Sample Food Sample Initial Temperature (oC) � 1oC Final Temperature (oC) � oC Spaghetti 24 - Macaroni 25 - Rice 24 - Bread 24 - Processing Raw Data and Presenting Processed Data : Table of Temperature Change of Water for Each Food Sample Food Sample Initial Temperature (oC) ...read more.

Conclusion

However, when trying to get the food on fire, the food was not able to burn without being above the Bunsen. Therefore, there might be a few things causing this problem. For instance, the indirect contact between the flames from the Bunsen burner with the food might be one of the causes why the food did not burn. Moreover, the amount of food sample might also affect the experiment, maybe the amount, which is 1 gram, is too much. Improving the Investigation : To improve this experiment, some things can be done. For example, rather than burning the food on a spoon, a needle can be used instead, allowing direct contact between the food and the flame. Another thing that can be fixed is the amount of food. For this experiment, I set a standard weight, which is 1 gram; maybe if the mass was smaller, like 1/4 grams, the food can be completely combusted. ...read more.

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