Egg Lab Report

In the rubber egg lab also known as the osmosis lab, I first measured the circumference of the egg which was 6 inches. The egg had no cracks and was hard. I placed the egg in the vinegar and within seconds the egg started to bubble. These bubbles were carbon dioxide. After 72 hours the shell of the egg had started to dissolve or flake. This would be considered passive transport as the vinegar diffused across the egg shell without any force. Seventy-two hours into the experiment the membrane was exposed, and had a circumference of 8 inches. Before the egg had a shell and you couldn’t see through it but once the vinegar acted as an acetic acid it broke down the shell and left a yellow membrane that felt like rubber this is an example of diffusion. I then placed the egg in another container and put corn syrup over the egg for 24 hours. The egg had shriveled and shrunk, the water had left the egg and went into the syrup and that is what caused the egg to shrink. The corn syrup is essentially pure sugar with very little water so the osmotic pressure is very low. I then placed the shriveled egg in water and waited for another 24 hours. After observation the egg had no

If we placed our chicken egg into a higher percentage of sucrose solution for a set period of 60 minutes then the egg will gain weight. If the egg gained weight then the sucrose solution it was placed in had a low concentration that would make it hypotonic. If the egg loses weight then sucrose solution it was placed in had a high concentration that made it hypertonic. If there is no change in weight in the chicken egg when placed in the concentration the solution will happen to be isotonic.

Hypothesis: If I place an egg in vinegar, then the outer layer of the egg is going to become slimy and look like rubber. It will also become larger and bubbles will form on and around the egg.

This exercise is aimed at giving a better understanding of the process of osmosis by analyzing how the decalcified eggs behave under different experimental conditions. The shell-less eggs used represented a model for a living cell and its selectively (semi) permeable membrane.

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

How will the cell change as a result of being placed in different types of liquids? In this experiment we studied and tested the effects corn syrup, vinegar, and distilled water had an egg. When placed in vinegar the egg will double in size because the egg will soak up the vinegar. When placed in corn syrup the egg will shrink in size because the corn syrup will cause the egg to throw everything out.

In the lab of “The Falling Eggs and Automotive Lab”, we had to design a protective device able to hold the egg and allowing it survive from the impact of hitting the ground from the top of the staircase. We did this lab to investigate newton’s Laws and prove how they work. In the lab, we have to observe the forces that act on the egg and evaluate the way they work. We do this lab with an egg to relate to a real life collision with a car. The egg is essentially the person and the device that the egg is in is the Airbag. We use our knowledge about airbags and apply that to this lab in order to make the egg survive and not crack.

The purpose to this experiment was to study the effect of osmosis in de-shelled chicken eggs in different percentages of sucrose solutions. Osmosis is the process, in which, water moves across a differentially permeable membrane. The eggs were soaked in vinegar to remove the outside hard shell but still leave the egg in its membrane. By placing the six de-shelled in different sucrose solutions, we tested the rate of osmosis. The eggs were placed in the solutions for an hour and weighed in fifteen minute intervals. Then, each weight was recorded and graphed. The results showed that the egg in the water solution gained the most weigh and the only other egg that gained a little weight was the one in the 10% solution. All the other eggs in the different solutions lost weight, even the unknown solution. According to the results the egg that was in the distilled water solution gained weight because it is the hypertonic solution. All the other eggs lost weight because they were placed in hypotonic solutions with different concentrations of sucrose. The egg that was placed in the higher concentration of sucrose lost the most weight. So, the higher the concentration of sucrose, the more water the egg lost.

By the end of the experiment, it was predicted that the egg would be swollen when left in water and shriveled when left in corn syrup. Based on the data given from the table above, the prediction is, more or less, right. The egg did, in fact, shrivel up and the weight of the egg did go down as well. Compared to the beginning of the experiment where the egg had an initial mass of 81.50 grams, but by the end of the water aspect of the research the egg ended up weighing 93.74 grams, therefore, there was an increase of 12.24 grams. Using the data table the weight from the start the syrup aspect of the experiment was 93.74 grams, after being left in syrup the egg weighed a total of 57.32 grams, thus, the egg decreased in weight by 36.42 grams.

In this experiment the process of osmosis is being observed and the different conditions in which osmosis occurs. In the egg osmosis experiment kinetic energy is used making this process a passive transport ‘in passive processes concentration or pressure differences drive the movement (Marieb,Smith, 2007)’ since ATP is not required which is called facilitated diffusion.

An egg has a semi-permeable membrane, thus processes like osmosis could occur. Osmosis is the movement of water molecules from an area of higher water concentration to an area of a lower water concentration. Osmosis is important, especially for living organisms, as they help distribute nutrients in the body. An egg’s mass would change when it is soaked in different substances. The goal of this experiment was to investigate how an egg changes through osmosis. This experiment was done to show how substances affect the mass of an egg. To start off, an egg’s mass was measured by putting the egg in a beaker then placing it on a mass scale. The beaker was then filled with vinegar and left alone for twenty-four hours. After a day, the egg was taken

This is the final step of the experiment. The shell-less egg was now placed into a new cup, but very carefully, as the egg was more fragile than when it was soaked in vinegar. The egg in the new cup was then covered with water. The egg sat in the water for a 24 hour time period once again. During this 24 hour time period the eggs appearance and size were once again recorded. After the time period had completed, the egg was removed from the water and was very carefully patted dry. Since the egg was now swollen, extra care was needed when holding the egg. The swollen egg was placed on the scale on last time and its mass was recorded as M3.

The eggs were each individually placed in one of the beakers and were taken out and weighed every 15 minutes for 60 minutes. Weighing the eggs helped to test the process of osmosis by finding out the mass before and after soaking in water, this will dictate whether water has moved in or out of the egg.

Cells in all living things have an outer layer known as the cell membrane. The structure of the cell membrane consists of the phospholipid bilayer organized by the arrangement of hydrophilic heads and hydrophobic tails. It is a selectively permeable membrane, where it divides the outer environment from the interior of the cell. It can control substances moving in and out of living cells. Certain molecules like gases, water, and food are permitted to pass the membrane through the method of diffusion. Diffusion refers to the process in which molecules move on the concentration gradient, where they move from an area of high concentration to an area of low concentration. A type of diffusion is known as osmosis. It is the diffusion of water moving across the selectively permeable membrane. In this lab, students will be using eggs to construct an experiment to get a better study on how osmosis works in a cell. The eggs will be soaked in vinegar solution to remove their shells to expose each inner layer that resembles a selectively permeable membrane. The egg shell is composed of calcium carbonate that would dissolves in acidic solution such as vinegar. In the chemical reaction, it releases carbon dioxide gas. After the removal of the egg shell, it will be ready to be able to construct the experiment.

4.15. The purpose of this investigation was to use our knowledge on osmosis and diffusion and apply it to a de-shelled egg and see how it reacts being submerged in a sodium chloride solution. The hypothesis was that the egg would expand and increase in both size and weight this is proven correct in the table of