The purpose of this experiment is to examine the densities of different liquids, such as soft drinks and water. This experiment will help us answer the question, “which among these liquids has the greatest density?” The data collected from this experiment will be analyzed to compare the densities of these liquids. In using the Archimedes’ Principle, this experiment will seek to examine the density of liquids rather than solids. This experiment will explore the area of physical science and applying it to everyday objects.
Research:
When terms of measurement such as mass, weight, density, and volume are thrown around in science, their meanings can become confusing. Many people often associate weight with how much stuff that the object
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This would most likely be because of human error in measuring out the liquids, since a graduated cylinder was not used, or because of incorrect measurement. The graphs represent that trial one has the Diet Coke set with the lowest density and regular Coke at the highest with about 1.034 g/cm3. In trial two, the regular Coke still has the highest density, but the water became the lowest. So the liquid that has the lowest density could either be the water or Diet Coke since they have the lowest densities among the graphs. In the line chart they both seem to rise and fall in mostly the same areas, however trial two’s line has higher values. The main purpose of this experiment was to find the densities of different cokes and compare them. Not only was that accomplished, but the answer to another question was answered - what soda is more dense and the answer is Coke. The original hypothesis was regular Coke, Diet Coke, Dr. Pepper, Pepsi, and last is water. The tested out experiment gave this information - Coke, Dr. Pepper, Pepsi, Diet Coke, and water. The data that contained the two different volumes of the liquid proved that the density that the liquid had not changed much, but it did change to a certain extent. That change is shown in the line chart that compares the first trial and the …show more content…
In the beginning, the hypothesis made was Coke, Diet Coke, Dr. Pepper, Pepsi, and water. After conducting this experiment, the data showed that the answer is: Coke, Dr. Pepper, Pepsi, Diet Coke, and water. In order to conduct this experiment the liquids needed to be measured for mass and volume, once that was completed the variables could be plugged into the equation - d=m/v. This experiment not only explored the area of physical science, it applied physical science to everyday objects. It proved that the density between sodas are different, even if by a tiny amount. Something to do differently in the next trial would be to get a graduated cylinder to replace the measuring cup. In this way the scientist would not experience any mistakes or errors in the process, since it is less likely for human error. This experiment has given the answer to the hypothesis and helped to show what density
I am doing this experiment to find the density of aluminum foil to see if it floats or sinks when placed in water. I hope to find how the density of aluminum foil changes when weight is added to the foil. I hypothesize that the boat will hold 20 pennies before sinking.
It was learned that changing the volume of the same substance will never change the boiling point of the substance. However having two different substances with the same volume will result in two different boiling points. The purpose of this lab was to determine if changing the volume of a substance will change the boiling point. This is useful to know in real life because if someone wanted to boil water to make pasta and did not know how much water to
To begin the experiment, we measured 5cc of water and 5g of NaCl and added them to a test tube. Next, we stoppered the test tube and shook vigorously for two or three minutes. After we observed that the solution was saturated and massed an evaporating dish (18.89g) and poured most of the solution into it, while being careful not to pour any undissolved solid into the dish. Next, we massed the evaporating dish with the solution and found it to be 23.32g. The next step was to slowly evaporate the solution in the evaporating dish using a hot plate. Once the liquid was evaporated from the solution, to the best of our ability, we massed the remaining solid in the dish, which we found to be 20.32g. This was the last step of the physical portion of the experiment, and we proceeded to the calculations. First, we found the mass of the remaining solid by subtracting the mass of the evaporating dish from the mass of the solid and evaporating dish, which we found to be 1.43g. To find the mass of the evaporated water we subtracted the mass of the solid and evaporating dish from the mass of the solution and evaporating dish, which we found to be 3g. Because the density of water is 1g/1cc, the mass is the ...
The materials that were needed to conduct this experiment was a concrete or lead object, a scale to weigh the object, string, empty bottles, sea water, a graduated cylinder for measuring the water accurately, and buckets filled with sea water.
The hypothesis of this experiment: The volume of two substances, whether it be water & water, isopropyl alcohol & water, or vegetable oil & water; they will always be additive when mixed together and measured. The density will remain equal. This ruling is based on a contradiction with the statement made by Mark W. Meszaros, PhD, stating that they will be subtractive.
It was then placed in the ice bath, in which immediately the can slightly collapse on itself. In part two of the experiment, the prepared ice bath temperature measured at 1°C (T2). While the heated bath temperature stabilized around 85°C (T1) after 5 minutes, where it also began to simmer. The test tube with the rubber stop in the heated bath had no water for the entire 5 minutes. When the test tube was placed inside the ice bath for 5 minutes water appeared to flow inside the test tube. The amount of water that flowed into the test tube measured at 5 mL (Vw). When determining the volume of the test tube in the 100 mL graduated cylinder with 30 mL of water, it displaced the water up to 74 mL. Thus determining the volume of the test tube as 34 mL
Finding the Densities of an Unknown Solid and Liquid in Order to Determine What they Are
After finishing the trials, our group subtracted the mass of the glassware without water from the mass of the glassware with water in order to find the mass of the water in grams. Then, we divided the mass of the water by the density(g/cm^3) of the water in order to find the volume (mL). An example calculation from the 5.00mL pipet is: (4.9285mL+4.8839mL+4.9367mL+4.9265mL+4.9134mL)/5 = 4.9178. In most cases, the temperature of the water was around 23 degrees celsius, making the density about .998408 g/cm^3 for many of the trials. The densities we used were found online. The next calculations we performed were to determine the average volume of the water in each person’s five trials by adding up all of the volumes(mL) and dividing that number by five. Using the average volume, we then calculated the
Showing from trial to trial what would occur if different quantities of lemon drops impacted the mass of the curd. Therefore, the hypothesis was supported because different amounts of lemon drops did alter the mass of the curd. With some having a heavier density than other trials performed. As used, in the 1st and 3rd trial, more lemon added impacted the mass from the curd by increasing its mass by 1.3 grams. Since lemon has a higher saturated concentration with the saturated fat from the milk its mass could well be varied upon on, which is why adding more or less lemon drops does effect the mass of the
Regarding the densities of Coke and Diet Coke, I believed that the density of coke would be greater than the density of Diet Coke. Because the content of Coke contains more sugar than Diet Coke, it would contain more mass and since density is mass dependent, Coke would be denser than Diet Coke. From the results of the experiment, there was a slight difference between the densities of Coke and Diet Coke. The measurements obtained from the pipette and the graduated cylinder demonstrated that Coke is denser than Diet Coke while Diet Coke was shown to be denser than Coke using the burette. With the pipette, the average density of Coke is 1.02 and the average density of Diet Coke is 0.99. With the graduated cylinder, the average density is 0.976968 and the average density of Diet Coke is 0.95. With the burette, the average density of Coke is 0.99 and the average density of Diet Coke is 1.0. Among the three instruments, the most precise was the graduated cylinder and the most accurate was the volumetric pipette. Since density is defined as mass/volume, changing the volume of Coke or Diet Coke would have changed.
In a Styrofoam cup, record the temperature of the 200 ml of cold water. This is 200 g of water, as the density of water is 1 g/ml.
Generally pycnometer is made of glass, with a clos-fitting ground glass stopper with capillary tube through it, so that air bubbles mas escape from the apparatus. This device enables a liquid density to be measured through an appropriate working fluid, such as mercury or water, using analytical balance. When the flask weighed empty, full of water, and full of a liquid whose relative density is desired, then relative density can be easily calculated. The specific gravity results show that subsoil specific gravity varies between 2.45 and 2.7. Pycnometer analysis work system shown in Figure 12.
the mass of the potato cylinder as well as the length as the mass can
Operation: A hydrometer is a measurement instrument used to measure the relative density of liquids, the ratio of a density of a liquid to the density of water.
Density, by definition, is mass per unit volume. In the case of fluids, we can define the density (with the aid of Fig. 1.3) as the limit of this ratio when a measuring volume V shrinks to zero. We need to use this definition because density can change from one point to the other. Also in this picture, we can relate to a volume element in space that we can call “control volume,” which moves with the fluid or can be stationary (in any case it is better to place this control volume in inertial frames of reference).