Fire Snake Experiment Lab Report

he experimental variable in this experiment was the changing number of Alka Seltzer tablets that were put into the 250mL beaker of vinegar. Some of the control variables in this experiment were that the same beaker and thermometer were used for each trial, the same type of vinegar and Alka Seltzer were used for each trial, and the same amount of vinegar. The original Hypothesis was that more Alka Seltzer would increase the temperature of the vinegar was not correct. After analyzing the data it can be seen that for the first trial the temperature did not change as it stayed at 24 degrees Celsius before and during the reaction with 1 tablet, also for trial two with two tablets the temperature stayed the same at 23 degrees Celsius and did

The python’s intestines thicken, their insulin levels shoot up, liver and kidneys double in size, they have a 6-degree temp increase, their metabolism jumps 8-fold, and their pulse quickens as they digest.

Experiment 2 focused on finding the enthalpy of solution of magnesium chloride. Testing the enthalpy of solution started with measuring out 10 mL of deionized water in a graduated cylinder for three separate trials, each trial having a different mass of magnesium chloride. The water was then poured into a well of a Styrofoam calorimeter then the initial temperature of water was taken using a temperature probe and the LoggerPro programming. A measured amount of magnesium chloride was placed in the same well as the water in the calorimeter,

The Frog Fire is one of more than a dozen wildfires burning across California. The Frog Fire has consumed 800 acres of land since Thursday (date). Around 8,000 firefighters are working to contain these California wildfires. The California National Guard even sent nine planes in an attempt to get rid of the flames.

In this unit we have conducted research and experiments on our chosen reactions to create the highest exothermic reaction for the The Heat-and-Eat meal pack will use a chemical reaction that involves two reactants. Reactant 1 is a solid and Reactant 2 is a liquid.

If 10.0g of solid baking soda is poured into 30 mL of citric acid, then a reaction will occur and an increase in temperature will be observed. Whereas, if a piece of magnesium metal is added to 30 mL of Hydrochloric Acid, then a reaction will occur and an increase in temperature will be observable. For Part 3 of the experiment, if 50 mL of tap water is placed in a can 2.5 cm inches above a burning marshmallow, then through the process of calorimetry the energy content of the marshmallow should be 5.0kJ/g (the value provided by the United States Department of Agriculture).

Using a piece of aluminum foil with a slit in it, place the foil between the base of the flame and the liquid in the bowl. Note the behavior of the flame. 7. Invert a beaker over the lit flame. Make observations

The amount of tablets did effect the temperature of the water. Our findings made our hypothesis incorrect. The temperature of the water did increase as the number of the tablets increased also. In this experiment, the finding were quite surprising, simply because I thought that the temperature of the water will decrease as the amount of the number of tablets increased. In the real world I feel like this information would be beneficial, because it shows the reaction of an acid plus a base mixed with water.

In order to determine whether a hydrocarbon produced heat upon altering its chemical state, a bomb calorimeter was used to find the value of the heat of combustion for sucrose and an altoid mint. Using benzoic acid to calibrate the bomb calorimeter, the two samples were individually placed in a combustion cup within a stainless-steel cylinder enveloped in water, sealed shut by a shield containing a thermometer. After igniting the bomb, a change in temperature (°C) versus time (s) was recorded. Using the following equation, ∆T=T_c-T_A-r_1 (b-a)-r_2 (c-b), the ∆T of benzoic acid was 3.71°K. Which lead to the determination of the effective heat capacity, using C_(v,cal)=((∆cH_b-∆nRT/m_b ) m_b+C_Fe+C_N)/∆T, to be -9,666.27J/g

The lab used methods of calorimetry in order to measure the temperature change of reactions and calculate the changes in

A Cheeto Puff was used as the food sample in the second experiment. The heat capacity of the sinker was determined by dividing the heat absorbed by the water by the sinker’s temperature change and the two values for each trial were determined to be 7.82 J/०C and 9.88 J/०C, with an average actual specific heat capacity of 0.136 J/g०C, a 16.9% difference from the theoretical heat capacity of lead of 0.159 J/g०C. The percent difference was too vast to support the hypothesis, which required that heat capacity be calculated accurately with little error. For this first experiment, performance errors that contributed to the inconsistent results were the touching of the the thermometer to the calorimeter and continuous, unnecessary movement of the thermometer, producing inaccurate measurements of the water temperature. Likewise, the lead sinker was left out in the open for too long while transitioning between the hot water bath and the calorimeter, causing heat and energy loss.

The time that the food was burning could have affected the hypothesis to make it wrong because the more time the food is burning, the more grams it is losing. I think that the amount of time burning and the temperature of the water at the end has to do with empty calories. The more empty calories there where compared to actual calories, the less time it would burn, and the less heat it would

The first question was, “What type of energy was produced?” Since I used several liquids such as water, milk, and tea, it all had different outcomes. But once I constantly put the alka seltzer in each cup, the energy was released. Exothermic energy was revealed because the tablets had particles inside it that made the liquids start to have an explosion effect. “Why does different temperatures of liquid give unlike results?” is the next question on the list.

This hypothesis relates to the experiment by saying how when different liquids were used, there were many different reactions. Proving the hypothesis is supported. The experiment could be done differently by using other powders, liquids, etc. This could cause many changes. One thing is the expansion of options. It would have many substances to compare to the unknown. Thus creating a lot more options for the unknown powder to be. It could also increase the probability of error, from having so many different resources. Sources of error could include adding too much powder and not enough liquid. Doing this could cause the balance to be off. For example, not adding enough liquid could cause the powder to not react. When in reality, the substance usually fizzes or changed color. Doing this experiment made learning about different reactions to different substances

The aim of this experiment was to test the heat of combustion over a period of time, and the energy required to combust alcohols with different carbon chain levels. It was hypothesised that the higher the carbon chain of the alcohol present, the faster the heat of combustion will occur. Meaning more energy will be released for a higher carbon chain. After calculating the results from the experiment it was found that the hypothesis was partially supported. The reasoning for this is as the alcohol that posses a higher carbon chain, generally increased there reaction rates. However there were a few exceptions to this rule.