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How much energy is there in some foods that you eat? Food Mass of the food (g.) Temp. of the water before the test (?C) Highest temperature of the water during the test (?C) Temp. increase (?C) Kit Kat 3.74 22 100 78 Rice cake 3.55 25 90 65 Peanut 3.72 25 90 65 White bread 3.36 25 57 32 Digestive biscuit 3.44 25 61 36 The mass of water in the boiling tubes- this apply to all of the foods test P= 1g. /cm Mass = 1g. /cm x 20cm = 20g. The energy transferred to the water in the boiling tube Mass of water = 20g Energy transferred to the water- P= m/v The energy transferred to water = m x c x T Specific Heat capacity = 4.2 J/g. Food The change in temp. (?C) Energy transferred to the water (working) m x c x T Answer in (kJ) Kit Kat 78 20 x 4.2 x 78 6552 Rice cake 65 20 x 4.2 x 65 5460 Peanut 65 20 x 4.2 x 65 5460 Bread 32 20 x 4.2 x 32 2688 Biscuit 36 20 x 4.2 x 36 3024 The energy released per gram of food burn Food Mass (g) Energy released from food to the...

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