Effect of temperature Results In this experiment, results from two Procambarus propinquus (crayfish) were collected to observe the difference in oxygen consumption at different acclimated temperatures. These cray fish were collected from Medway Creek in London, and acclimated to their new environment and temperatures. The crayfish were exposed to the cold environment having an average temperature of 7° or warm having an average of 22°. An unpaired, two-tailed t test was performed to determine if there would be a change in O2 consumption between 2 individual crayfish.…
The purpose of this lab was to understand the Law of Conservation of Mass and how it works, using half of an Alka-Seltzer tablet, concealed in a water to fill the container, while a balloon sealed the top to keep it a closed system. The hypothesis was, if the Alka-Seltzer chemical reaction is a closed system, then the mass of the products will equal the reactants. The data did not support the hypothesis because the products were almost always a different mass to the reactants but only the last trial revealed that the mass of the reactants was equal to the products. Usually, the trials indicated a loss of mass until the third trial was done, which was a success. Since the experiment was a closed system, matter could not leave or enter.…
Growing Gummy bears What gummy bear turned out to be the biggest after being put into 3 different liquids ? Hypothesis If you put the gummy bear in the sierra mist it will grow bigger than being put in the vinegar or the water Procedure Fill your cups with 5 tbsp of sierra mist 5 tbsp of vinegar 5 tbsp of water Put your choice of color of gummy bear in the 3 different cups Wait for about 12 hours Take the gummy bears out of the cups Put the gummy bears out on a plate and compare the sizes Measuer the gummy bears and make a graph Safety Hazards…
Osmosis and Diffusion Egg Lab In this lab, an egg is used as a representation of an actual cell, the shell being the cell wall, and the yolk being the nucleus, which like an actual cell also expands when placed in a substance like water, and shrinks when placed in a thick substance like corn syrup. I hypothesize that water will make the egg hypotonic, which means that the cell is swollen due to an excess of water in its environment and corn syrup will make the egg hypertonic, which is the shriveling of a cell due to a lack of water and or salt in a solution (Crowe, 2016). Then soaking it in water, and later corn syrup after the 24 hour period of soaking in water and other shorter increments of time. The purpose of this lab is to see osmosis…
Jennifer Price’s view of American culture in her essay, “The Plastic Pink Flamingo: A Natural History”, is communicated through quite sarcastic and accusing tones with how she crafts her text. As you read through the piece, Price delivers many facts about the influence of the “pink sensation”, or the flamingo image, in American culture during the 1950s. The way she delivers this, however, gives the impression that she doesn’t particularly favor American culture and her views of the topic aren’t those of positivity and outright worship. First Price begins her piece with how the image of the flamingo came to be such a well-known one throughout the United States, claiming that it “staked two major claims to boldness” (2). During the 1910s and…
I found the idea for this experiment on Science Buddies and many people have done the same experiment. Each has made different cars that they think will be the fastest or go the longest distance. Others have tested this experiment, but they put a weight such as pennies, marbles, etc. What I am planning to do is make a very lightweight car that can travel a longer distance. The energy that the balloon will force out is called kinetic energy.…
Explain. If people only had the mass of the block, we can’t really determine it because the experiment needed the density of the block. The experiment also couldn’t use the formula mass/volume to get density. Also the mass of the matter can be equal to anything you just need the right amount.…
Seashell Lab What does the different concentration of acid do to shells? Due to earth’s increasing carbon dioxide (CO2) rates scientists have shown that it can make shells , skeletons and corals up to one-third lighter in weight. As the ocean water becomes more acidic it lowers the calcium carbonate available to aquatic animals. ‘Scientists have predicted that the increase in ocean acidification could significantly reduce the ability of these creatures to build their casings, potentially devastating them and causing rippling effects through the ecosystem.’…
On today’s Mythbusters episode they were testing if a bug were to hit you at high speeds on a motorcycle could it kill you before you even hit the ground. The cast members that were on this experiment were Tory Belleci, Grant Imahara, and Jessi Combs. They first started by going to see a physician Dr. Billy Trolan to ask if there was any way or pressure points on the body where an insect could hit and actually killed you before you hit the ground. They were then shown a chart and it showed them how much pressure it takes for something to kill a person instantly.…
(gloves, quarters, dry ice) 6. Dry Ice in Warm vs Cold Water Place a small amount of dry ice into a small cup/beaker of cold water and a small cup/beaker of warm water side-by-side. Have the kids compare their observations and offer an explanation as to why one may look different from the other. The warm water…
Back in the late 1960s, Walter Mischel, a Stanford University psychologist, conducted a psychological experiment known as the Marshmallow test. The experiment was conducted at the Stanford University nursery. He wanted to understand the concept of delayed gratification in a small child between the ages of 4 and 6. The idea was to create a situation for the child to choose between a small reward now and a large reward later, thus causing a conflict situation. They were deliberately placed in a room with no mental stimuli, which allowed them to see if the children could distract themselves from the reward.…
“The Law of Conservation of Mass states that matter can be changed from one form into another, mixtures can be separated or made, and pure substances can be decomposed, but the total amount of mass remains constant.” (University Of Wisconsin) The data the was found from our lab shows that the data is not consistent to the Law of Conservation of Mass because our results showed an increase in mass. To start the lab, .7 grams of copper was measured out and at the end, the total amount of copper was .73 grams.…
Introduction Density measures the volume that a given amount of mass takes up. Usually, density has grams per unit volume as a unit. To find the density of an object, the object has to be measured and its mass has to be divided by its volume. Often times, density is used to identify substances, since different elements have specific densities. This experiment is made up of two sections; the first section measures the density of water and the density of an unknown substance.…
Catherine Delker Honors Chemistry – Yellow Blue Beaker Experiment Lab Report 8/20/15 Blue Bottle Experiment Problem: The purpose of this lab was to determine the oxidation rate of the Methylene blue solution when tested with varying amounts of solution. Background:…
More traditional tools for measuring mass are spring scales and triple beam balances. Discuss in terms of forces and torques how each of these tools can be used to determine the unknown mass of an object. Include in your discussion an explanation as to why mass measurements taken by a spring scale are affected by local variations in gravitational field strength, while those taken by a balance are not. The way a triple beam balance works has to do with the idea that equal masses on each side are being pulled downwards by gravity with equivalent forces.…