Starch is a nutrient in food. Starch is a source of energy. The diagram shows equipment that can be used to measure the energy content of different foods. – 10004

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1. First, I added water to a boiling tube and measured the starting temperature of the water. Then I put a piece of food on a mounted needle and set it on fire. I held the burning food under the boiling tube and let it heat the water.
   When the food stopped burning, I measured the final temperature of the water. I recorded the highest temperature it reached. I then repeated the experiment with the other food.
   To keep it a fair test, I made sure to:
   se the same mass of food (measured with a balance)
   Use the same volume of water (measured with a measuring cylinder)
   Make sure the water started at the same temperature each time
   Keep the same distance between the food and the boiling tube
   Burn the food for the same amount of time
   Stop draughts by putting a screen around the setup

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