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Report on density measurement
Density measurement lab report
Theory of density measurement experiment
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The hypothesis on whether the mass of the Gummy Bear would increase or decrease was accepted. The data collected during the lab supports my hypothesis because the experimental Gummy Bear's mass for Day 1 was 2.7g when placed on the balance. Then in Day 2, the mass increased to 6.0g. The change in the mass of the Gummy Bear's were 3.3g. The Control Bear's mass on Day One was the same as the experimental Bear's, 2.7g. On Day Two, after being stored in a refrigerator for 24 hours, the mass was still the same staying at 2.7g. Some options for future projects like this are finding the increase or decrease in the density. Or another option is to find the increase or decrease in the measurements of the Gummy
The gummy bear in water grew bigger because the water has minerals in it so it can grow more, I know that the one in water is bigger because in the data table it showed the amount of change and the gummy bear in the water grew 0.5cm more than the other gummy bears put in liquid.
In the experiment “ Talking to plants “ from Mythbusters, potential problems include the use of greenhouses with no sound insulation, a non-homogeneous location and the use of only one specie to infer on a population. In another scientific study, researchers chose to use “ a noiseless growth chamber to prevent any effects from extraneous noise “ and the use “ growth chambers under continuous light at 28 c and 65-75% relative humidity “ in order to maintain a homogeneous location for all plants during the experiment (Jeong et al., 2008) . This helped further explain the findings because with the use of noiseless chambers you can assure that the only noise that the plant was receiving was the one given in the treatment and a valid conclusion
In conclusion the experiment was carried out and had great success proving my prediction to be correct and enabling solid and valid results which were able to be put in a graph. I believe my prediction could have been more accurate or more backed up if I had made a quantitative prediction. Though what I believed would happen did happen during the experiment which helped to understand the graph and the results which led me to be able to write a thorough report on them.
The purpose of this experiment is to determine the effects, if any, that freezing Gatorade has on its conductivity.
In the analysis, the hypothesis was that pennies made before 1982 were made out of a different substance than the pennies made after 1982. The hypothesis turned out to be true. The pre 1982 pennies were made out of copper which has a density of 8.6 g/mL and the post 1982 pennies are made out of zinc which has a density of 7.14 g/mL. So it can concur that mass for pennies made before 1982 are higher than pennies made after 1982. Some errors were when calculating. The densities for the pennies and making the graphs. When making the graphs, it can be suspected that each graph is wrong could be wrong due to not adding enough data points or misplaced points. For the data tables , it can also be suspected that the density for each data table could
I am going to carry out an experiment to measure the change in mass of
In this experiment, there were several objectives. First, this lab was designed to determine the difference, if any, between the densities of Coke and Diet Coke. It was designed to evaluate the accuracy and precision of several lab equipment measurements. This lab was also designed to be an introduction to the LabQuest Data and the Logger Pro data analysis database. Random, systematic, and gross errors are errors made during experiments that can have significant effects to the results. Random errors do not really have a specific cause, but still causes a few of the measurements to either be a little high or a little low. Systematic errors occur when there are limitations or mistakes on lab equipment or lab procedures. These kinds of errors cause measurements to be either be always high or always low. The last kind of error is gross errors. Gross errors occur when machines or equipment fail completely. However, gross errors usually occur due to a personal mistake. For this experiment, the number of significant figures is very important and depends on the equipment being used. When using the volumetric pipette and burette, the measurements are rounded to the hundredth place while in a graduated cylinder, it is rounded to the tenth place.
Each different mass (50g, 100g and 150g) was trialled 4 times each and then an average was calculated. The experiment performed supported the hypothesis made which was that if the counterweights mass increases than the distance travelled by the projectile would increase. Why is it supported? Explain using data. The trebuchet worked by holding back the throwing arm and then letting the throwing arm go. Once let go, gravity acts on the counterweights as its heavier (non-contact force) and the projectile was launched where did you get this from? More weight causes the arm to move faster, which is what causes the projectile to launch further.. As the counterweight got heavier the distance increased because gravity acted
Abstract: Marshmallows have more Calories per gram. Marshmallows have .2079 J/g℃ and cheese puffs have 1.08x103 J/g℃. My hypothesis was that marshmallows have more Calories per gram and my results confirmed my hypothesis because there is a .2068 J/g℃ difference.
Dehaene provides many studies within the book to explain how the unconscious is capable of processing semantic information. In the 1970s Anthony Marcel produced a study in which participants were flashed the word red or blue under the threshold of consciousness, then asked to pick a corresponding color, even though the participant stated that he/she was not able to perceive any word being shown. The study showed that participants were able to choose a corresponding color one-twentieth of a second faster when the word flashed ahead of time was red or blue, instead of an unrelated word. Since the participant was better able to pick the color patch based on the congruent primed word, it can be suggested that the brain is able to unconsciously process
The volume of the liquid inside each beaker after each day was a starting from 200 mL to 170 mL, 170 mL to 160 mL, and 160 mL to 137 mL. This answers my problem question because it shows my data going up to my final answer of 96 grams and a volume of 137 mL this means it has started off a number and has increased and then decreased to a lower number than that start number then increased to a higher number than that other increase. The independent variable is the solutions, the dependent variable is the mass, the controlled variable is temperature, egg classification, and the time. My hypothesis was proven in a way but not thoroughly made clear through each day which means I kind of got it correct I had it correct when the egg will shed or melt its shell that's really
The purpose of the lab was to show the effect of temperature on the rate of
I choose this experiment because I am a hunter and having an accurate rifle is a good thing. In hunting the first shot counts. Now here is my data I got from the experiment but first a little history on the guns the .234 is a small hunting rifle use on deer and other small game. The .270 is a med. game rifle for deer and up to small elk. The 30-.06 is a large game rifle for elk and up to moose. My problem is the I wont to find out what is the most accurate rifle is. My hypothesis is if three rifles are tested for accusey then what is the most accurate the .270 is the most accurate rifle because a lot of people think the .270 is the most accurate rifle so I am going to test it. So I some research on my experiment I look to be one of the first one to do this
Our hypothesis for this lab was that the limestone will add mass because it is a sedimentary rock, and weathering and erosion break down a rock. Our data refute our hypothesis because we said it will gain mass when the limestone lost mass. The limestones Initial mass was 3.67, and after we put it in the oven the mass went down too 2.81. The mass went down by 0.86. Also, the graph above shows our data. The red line of the graph was the change in mass after we put it in the oven, and the blue line is the Initial mass. The red line doesn't move that much. After we put the rocks in the oven only one changed in mass. The Limestone changed 0.86 in mass, Quartzite changed 0.00 in mass, and Obsidian changed 0.00 in mass. By that data the oven did not really change the difference in mass. The blue line is our initial mass. Limestone was 3.87, Quartzite was 67.51, and Obsidian was 10.63. In the graph it shows the blue line going up. Our initial mass goes up, but our final mass stayed the same besides the limestone changed by 0.86. In the graph there were two trends. One goes up, and the other one basically stayed the same. The initial mass had a bigger impact because we used 3 rocks, and they were different masses. For the final mass the trend wasn’t that good because two of the final masses stay the same at zero, and the one that changed in mass was only a 0.86
The sand is The variables in this experiment were Volume and Temperature. So as to make this a fair experiment, care was taken to ensure that the beaker. was rinsed every time, and that the thermometer was in the room. temperature, so as not to yield any anomalous results. All the results will be taken on the same day, so that the room temperature does not differ, as this could affect the results also. My Hypothesis: My hypothesis is that the temperature of the water will decrease as the volume increases.