Heat Energy Lab Report

When animals consume food chemical bonds are broken down within their digestive systems. The energy within the food ingested is called calories; calories are the amount of heat required to increase the temperature of a gram of water (Snack Food Calorimetry). Heat energy is the movement of tiny particles in solid, liquid, and gas (Heat Energy). Heat energy is used during calorimetry because heat is measured by the amount of energy absorbed or released. The law of conservation of energy states that during any chemical or physical change the amount of energy stays the same (Holt 40). The temperature of water will be used to determine how much heat was absorbed and released, water is being used because it has a high specific heat, which makes water

The equation used to determine the healthiest and the unhealthiest is Q=mc∆T. To use this equation the experimenter would plug in the according numbers to the variables and solve according to. In trial number one hot cheetos originated with 29.31 cal/g and had an after product of 28.9 cal/g, this means that .41 g of the hot cheetos were burned. The initial temperature of water was 23.6 ℃ and the final temperature was 44 ℃, this means that the temperature rose 20.4 ℃. The mass of water was 48.39 g. To calculate the heat absorbed by water the equation Q=mc∆T will be used by taking the mass of water (48.39 g), the change in temperature (20.4 ℃), the specific heat of water 1.0 cal/g and multiply them in order to find the total amount of heat absorbed. To find the heat absorbed per gram is calculated by dividing heat absorbed by water (990 cal) by the mass of chops burned (.41 g). In trial number two veggie chips originated with 28.95 cal/g and had an after product of 28.68 cal/g, this means that .28 g of veggie chips were burned. The initial temperature of water was 24 ℃ and the final temperature was 39 ℃, this means that the temperature rose 15 ℃. The mass of water was 47.56 g. To calculate the heat absorbed by water the equation Q=mc∆T will be used by taking the mass of water (47.56 g), the change in temperature (15 ℃), the specific heat

For hot cheetos, the amount of heat absorbed by water was 990 ℃; the amount of heat absorbed per gram was 2400. For veggie chips, the amount of heat absorbed water was 710 ℃; the amount of heat absorbed per gram was 2500. For original pringles, the amount of heat absorbed by water was 1800; the amount of heat absorbed per gram was 1300. With this data it is concluded that original pringles are the healthiest option and veggie chips are the unhealthiest option. In many lab experiments errors occur; the errors in this experiment were calculated by comparing the label amount of calories to the amount of calories found while conducting the experiment. For hot cheetos, the percent error was calculated by subtracting 2400 by 5700 then by dividing it by 5700 continuing by multiplying it by 5700; the percent error was -58%. For veggie chips, the percent error was calculated by subtracting 2500 by 4600 then by dividing it by 4600 continuing by multiplying it by 5700; the percent error was -46%. For original pringles, the percent error was calculated by subtracting 1300 by 5400 then by dividing it by 5400 continuing by multiplying it by 5700; the percent error was -76%. According to the manufacture of these chips brands the experiment conducted the amount of calories in comparison contained an abundant amount of errors while looking at the percentages found