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Try this class experiment to investigate how much energy different foods contain. In this practical, students burn a sample of a foodstuff of known mass, heating a known volume of water. From the measured temperature change, students calculate the energy transferred to the water, and hence estimate the energy present per unit mass of food.
- Food
Chętnie wyświetlilibyśmy opis, ale witryna, którą oglądasz,...
- Food
Measuring the Energy Content of Food using the Bomb Calorimeter. Aim: The aim of this laboratory exercise is to apply the First Law of Thermodynamics to determine the energy content (i.e. food energy) of some simple foods.
Prepare a table of your results. Determine the number of kilocalories (food calories) released by the burning food sample. (1 kilocalorie = 1000 calories) Calculate the energy contained in the food in kilocalories / g. Using information on a nutrition label, calculate kcal/ g.
Interpreting. Drawing real-world conclusions. The Scientific Method. Analyze the Results In Analysis questions 1–5, students will compile the data from their experiments and make calculations to determine the caloric content of the foods tested.
The document discusses energy in food and drink. It provides information on energy units and the chemical energy store in foods. It compares the energy content of semi-skimmed milk and an energy drink, finding that the milk contains more energy per 100ml. It also describes an experiment to determine the energy stores of different foods by ...
calorimeter is a device designed to measure the energy released or absorbed during a chemical reaction or phase change. Food calorimetry allows us to determine the number of calories per gram of food. In this activity, you will burn a piece of food and use the released energy to heat a known quantity of water.
Use a calorimeter to determine the number of calories in 3 samples of food. Construct a model to illustrate the flow of energy through a calorimetry experiment and relate the model to what happens in cells. Next Generation Science Standards* (NGSS)
