The document summarizes an experiment conducted by a group of students to determine the food energy obtained from different types of nuts (peanuts, cashew nuts, and almonds) through calorimetry. The experiment involved burning food samples and measuring the temperature change of the surrounding water using a data logger. The results showed that almonds produced the highest temperature change while peanuts produced the lowest, indicating that almonds provided the most energy and peanuts provided the least. Tables of temperature data recorded during the burning of each food sample are also presented in the document.

1. FOOD ENERGY The POWER of Food!!!

2. GROUP MEMBERS NAME MATRIC NO. WONG SIEW CHING D20091034815 MARIA TING MEE SING D20081032208 PUI WAN TING D20091034840 SITI RAHAYU BT MOHAMED NOOR D20091034855 UMI ABIBAH BT SULAIMAN D20091034811

3. SCIENTIFIC CONCEPT Food energy is the amount of energy obtained from food that is available through cellular respiration . As food burns, it releases energy. Formula to calculate food energy:

4. ENGAGE We can get energy from the nuts. Why? Arrange the nuts from the highest energy to lower energy. Cashew Nut Peanut Almond

5. ENPOWER Material & Apparatus: clamp stand boiling tube food: peanut, cashew nut, almond a mounted needle data logger and computer temperature sensor Bunsen burner matches electronic scales

6. ENPOWER Data logger

7. ENPOWER Procedures : Connect the temperature sensor to the first socket on the data logger. Weigh the food sample and record it. Add 30 cm 3 water to the boiling tube. Start the sensing software and see that it recognizes the sensors we attach. Set up the software to record. Heat the food in a Bunsen flame to light it. Heat the tube of water with the burning food until it has completely burnt. Re-light the food if necessary. Weight the burnt food with the same electronic scale.

8. RESULTS Food sample Initial mass (g) Final mass (g) Changes in mass (g) Peanut 0.5851 0.0473 0.5378 Cashew nut 1.4791 0.1738 1.3053 Almond 1.1521 0.1330 1.0191

9. RESULTS Food sample Initial temperature (°c ) Final temperatur (°c ) Changes in temperature (°c ) Peanut 25.477 43.651 18.174 Cashew nut 26.491 85.924 59.433 Almond 25.680 64.600 38.920

10. RESULT: ALMOND

11. Time (s) Temperature(®c) Time (s) Temperature(®c) Time (s) Temperature(®c) Time(s) Temperature(®c) 0 25.680 51 32.331 102 44.260 153 55.460 1 25.680 52 32.526 103 44.463 154 55.794 2 25.680 53 32.623 104 44.666 155 56.017 3 25.680 54 32.817 105 44.869 156 56.240 4 25.680 55 33.011 106 45.071 157 56.574 5 25.680 56 33.303 107 45.376 158 56.797 6 25.781 57 33.497 108 45.579 159 57.020 7 25.781 58 33.691 109 45.781 160 57.243 8 25.781 59 33.886 110 46.086 161 57.466 9 25.883 60 34.080 111 46.289 162 57.577 10 25.883 61 34.274 112 46.593 163 57.800 11 25.883 62 34.469 113 46.796 164 58.023 12 25.984 63 34.663 114 46.999 165 58.357 13 25.984 64 34.857 115 47.201 166 58.580 14 25.984 65 35.051 116 47.404 167 58.803 15 26.086 66 35.246 117 47.607 168 58.914 16 26.086 67 35.440 118 47.810 169 59.137 17 26.086 68 35.731 119 48.013 170 59.360 18 26.086 69 35.926 120 48.216 171 59.583 19 26.086 70 36.120 121 48.419 172 59.806 20 26.187 71 36.314 122 48.621 173 60.029 21 26.187 72 36.606 123 48.824 174 60.263 22 26.187 73 36.800 124 48.926 175 60.526 23 26.289 74 36.994 125 49.129 176 60.789 24 26.390 75 37.286 126 49.331 177 61.051 25 26.491 76 37.480 127 49.534 178 61.314 26 26.593 77 37.771 128 49.636 179 61.577 27 26.796 78 37.966 129 49.839 180 61.840 28 26.897 79 38.257 130 50.111 181 62.103 29 27.100 80 38.451 131 50.334 182 62.234 30 27.201 81 38.743 132 50.557 183 62.497 31 27.404 82 39.034 133 50.891 184 62.629 32 27.607 83 39.326 134 51.114 185 62.891 33 27.810 84 39.617 135 51.337 186 63.023 34 28.114 85 39.909 136 51.671 187 63.154 35 28.317 86 40.101 137 51.894 188 63.286 36 28.52 87 40.406 138 52.229 189 63.417 37 28.824 88 40.710 139 52.451 190 63.549 38 29.129 89 40.913 140 52.786 191 63.680 39 29.331 90 41.217 141 52.897 192 63.811 40 29.636 91 41.420 142 53.120 193 63.943 41 29.940 92 41.724 143 53.231 194 64.074 42 30.194 93 41.927 144 53.454 195 64.206 43 30.486 94 42.130 145 53.566 196 64.337 44 30.777 95 42.333 146 53.789 197 64.469 45 31.069 96 42.637 147 54.011 198 64.600 46 31.263 97 42.941 148 54.346 199 64.600 47 31.554 98 43.144 149 54.569 48 31.749 99 43.449 150 54.791 49 31.943 100 43.753 151 55.014 50 32.137 101 43.956 152 55.237

12. RESULTS CASHEW NUT

13. Time(s) Temperature(®c) Time(s) Temperature(®c) Time(s) Temperature(®c) Time(s) Temperature(®c) 0 26.491 51 33.206 102 49.200 153 74.197 1 26.491 52 33.594 103 49.839 154 74.359 2 26.491 53 33.886 104 50.557 155 74.681 3 26.491 54 34.177 105 51.337 156 75.004 4 26.491 55 34.663 106 51.783 157 75.327 5 26.491 56 34.954 107 52.117 158 75.811 6 26.491 57 35.246 108 52.451 159 76.134 7 26.491 58 35.634 109 52.786 160 76.619 8 26.593 59 35.926 110 53.231 161 76.941 9 26.593 60 36.314 111 53.566 162 77.264 10 26.694 61 36.800 112 54.011 163 77.587 11 26.694 62 37.189 113 54.457 164 77.91 12 26.796 63 37.674 114 54.903 165 78.394 13 26.796 64 38.063 115 55.571 166 78.717 14 26.796 65 38.549 116 56.240 167 79.040 15 26.796 66 38.84 117 56.686 168 79.363 16 26.897 67 39.034 118 57.131 169 79.686 17 26.897 68 39.131 119 57.689 170 80.009 18 26.897 69 39.229 120 58.134 171 80.204 19 26.897 70 39.423 121 58.58 172 80.613 20 26.897 71 39.520 122 59.026 173 81.021 21 26.897 72 39.617 123 59.471 174 81.430 22 26.897 73 39.811 124 60.131 175 81.839 23 26.897 74 40.006 125 60.920 176 82.043 24 26.999 75 40.203 126 61.709 177 82.247 25 26.999 76 40.710 127 62.366 178 82.656 26 26.999 77 41.217 128 63.023 179 83.064 27 27.100 78 41.521 129 63.68 180 83.677 28 27.100 79 41.826 130 64.074 181 84.086 29 27.303 80 42.100 131 64.469 182 84.29 30 27.506 81 42.434 132 64.731 183 84.494 31 27.709 82 42.739 133 65.126 184 84.903 32 27.911 83 42.941 134 65.520 185 85.107 33 28.216 84 43246 135 65.783 186 85.311 34 28.520 85 43.550 136 66.177 187 85.516 35 28.723 86 43.753 137 66.571 188 85.720 36 29.027 87 44.057 138 66.966 189 85.924 37 29.331 88 44.361 139 67.360 190 85.924 38 29.737 89 44.767 140 67.886 191 85.924 39 30.291 90 45.071 141 68.411 40 30.583 91 45.376 142 68.937 41 30.777 92 45.68 143 69.594 42 30.874 93 45.883 144 70.161 43 31.069 94 46.187 145 70.807 44 31.166 95 46.39 146 71.453 45 31.36 96 46.694 147 72.260 46 31.554 97 46.999 148 72.744 47 31.749 98 47.303 149 73.067 48 32.040 99 47.709 150 73.551 49 32.331 100 48.317 151 73.713 50 32.623 101 48.824 152 74.036

14. RESULTS PEANUT

15. TIME(S) TEMPERATURE(°C) TIME (S) TEMPERATURE(°C) TIME (S) TEMPERATURE(°C) TIME (S) TEMPERATURE(°C) TIME (S) TEMPERATURE(°C) 0 25.477 47 27.404 94 31.263 141 37.577 188 449 1 25.477 48 27.506 95 31.475 142 37.674 189 550 2 25.579 49 27.506 96 31.554 143 37.771 190 651 3 25.579 50 27.506 97 31.749 144 37.869 191 651 4 25.579 51 27.506 98 31.846 145 37.966 5 25.579 52 27.506 99 32.040 146 38.160 6 25.579 53 27.607 100 32.234 147 38.451 7 25.680 54 27.607 101 32.331 148 38.646 8 25.680 55 27.607 102 32.429 149 38.840 9 25.680 56 27.607 103 32.526 150 39.034 10 25.680 57 27.709 104 32.720 151 39.229 11 25.781 58 27.709 105 32.817 152 39.326 12 25.781 59 27.709 106 32.914 153 39.423 13 25.781 60 27.810 107 33.109 154 39.520 14 25.781 61 27.810 108 33.206 155 39.714 15 25.883 62 27.911 109 33.400 156 39.909 16 25.883 63 28.013 110 33.594 157 40.101 17 25.883 64 28.013 111 33.789 158 40.304 18 25.883 65 28.114 112 33.983 159 40.406 19 25.984 66 28.216 113 34.177 160 40.507 20 25.984 67 28.317 114 34.371 161 40.609 21 26.086 68 28.520 115 34.469 162 40.710 22 26.086 69 28.621 116 34.566 163 40.811 23 26.187 70 28.723 117 34.663 164 40.913 24 26.187 71 28.824 118 34.760 165 41.014 25 26.187 72 28.926 119 34.857 166 41.116 26 26.187 73 29.027 120 35.051 167 41.217 27 26.187 74 29.129 121 35.149 168 41.319 28 26.187 75 29.230 122 35.343 169 41.420 29 26.187 76 29.331 123 36.440 170 41.512 30 26.187 77 29.534 124 37.638 171 41.724 31 26.289 78 29.534 125 38.829 172 41.826 32 26.289 79 29.737 126 38.926 173 42.029 33 26.289 80 29.737 127 39.023 174 42.231 34 26.390 81 29.839 128 39.120 175 42.333 35 26.491 82 29.940 129 39.217 176 42.434 36 26.593 83 30.194 130 39.314 177 42.434 37 26.694 84 30.291 131 39.411 178 42.536 38 26.796 85 30.291 132 39.606 179 42.739 39 26.897 86 30.389 133 39.800 180 42.840 40 26.897 87 30.486 134 39.897 181 42.941 41 26.999 88 30.680 135 39.994 182 42.941 42 27.100 89 30.777 136 40.091 183 43.043 43 27.201 90 30.874 137 40.189 184 43.144 44 27.303 91 30.971 138 40.286 185 43.246 45 27.303 92 31.069 139 40.383 186 43.246 46 27.404 93 31.166 140 40.480 187 43.347

16. RESULTS GRAPHS OF THE WATER TEMPERATURE

18. RESULTS Energy released from almond per gram(J) = 4.812 KJ

19. RESULTS Energy released from cashew nut per gram(J) = 5.737 KJ Energy released from peanut per gram(J) = 4.258 KJ

20. Discussions What do you observe from the graph? Do all the temperature increase with the same rate? How is the changes of the graph related to the food energy?

21. Do all the nuts contain same level of energy? If not, which nut contains the most energy and which nut contains the least energy? Arrange the food sample according to its energy in ascending order. Did the water lose heat as a result? How could this affect your results?

22. ENHANCE eat to live OR live to eat??? WHY??? OR

23. Many will say they eat to live because it is necessary to sustain life and as a respond to hunger. They eat in order to obtain the strength to carry on life's daily activities. However, there are also people who live to eat. They love to eat and they crave food of any and every kind. Live to eat is a habit of enjoying eating. This kind of people can easily suffer from obesity. My advise is eat to live, don’t live to eat.

24. Unique Features of This Activity the temperature can be recorded every second. the temperature can be recorded in three decimal places. the apparatus is quite simple and gives only a very approximate estimate for each foodstuff, so there is scope for students to suggest improvements in an evaluation allow students to understand better by comparing the graph.

25. Thank You….