Handle Egg Lab

The purpose of this lab is to determine what is the concentration of the unknown solution along with what concentration would be more isotonic to the chicken egg?

Hypothesis: If the egg is placed into water, then it will increase in size since water is a hypotonic liquid because it contains more water than 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.

Take the 5.15g of baking soda and pour it into the bottom half of the egg and securely put the top of the egg on.

Retrieve the solo cup with the egg in it and fill with the amount of vinegar that covers the egg appropriattly

Water diffuses across the membrane from the region of lower solute concentration (higher free water concentration) to that of higher solute concentration (lower free water concentration) until the solute concentrations on both sides of the membrane are equal. The diffusion of free water across a selectively permeable membrane, whether artificial or cellular, is called osmosis. The movement of water across cell membranes and the balance of water between the cell and its environment are crucial to organisms. ("Diffusion And Osmosis - Difference And Comparison | Diffen"). A semi-permeable membrane known as the cell membrane surrounds the living cells of both plants and animals. Both solute concentration and membrane permeability are

The evidence that was collected in the experiment refuted the day one hypothesis because after the egg soaked in vinegar for 72 hours, the mass of the egg was not the same, it was greater than before. The day two hypothesis was also refuted because after the egg soaked in maple syrup for 48 hours, the mass of the egg was not greater, it was less than before. The evidence collected accepted the day three hypothesis because after soaking in deionized water for 24 hours, the mass of the egg became greater than

Elise Velau 10/13/14 Period 4 Eggspearament Goal or Problem Investigated: I want to see what happens to an egg if it is soaked in vinegar for a couple of days. I hope that the raw egg does not make a mess if the shell dissolves. I hope that I will be able to experiment with a raw egg, and a hard boiled egg.

The lid was then placed on the jar and an observation was made and recorded. Observations of the egg were then made after 12 hours and 24 hours had passed and the observations were recorded. After 24 hours had passed, the egg was removed from the syrup and rinsed with tap water and observations were made and recorded.

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

Cells have an outer covering called the cell membrane. The membrane is selectively permeable meaning that it has tiny pores or holes that allow objects to move across it. The cell membrane controls what moves in and out of the cell. Food and oxygen move into cells across the cell membrane through

Procedures: To start my experiment I am going to gather all my materials to conduct my experiment. listed under the materials section. I start by poking holes in the top of eggs and I add four different colors to represent the different heights. Red is for the height of 3 ft, blue is for the height of 5-feet, yellow is for the height of 7 feet, and green is for the height of 9 feet. Set up 8 ft ladder.

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.

4.14. The accuracy of the data is dependent on the correct controls being in place, Ensuring temperate stays the same throughout all solutions, making sure that the solutions are correct that the weight and size of the eggs are the measured correctly and that when the eggs are removed they are removed at the same time. Some of the eggs were not completely submerged in the solution this may cause some errors in the experiment and may have caused varying results. The eggs were of different sizes this also will cause the results to vary, Gathering eggs of exact size and weight would have ensured the results were correct. The eggs may not have been dried enough also causing results to vary; this can be fixed by ensuring that the eggs are thoroughly dried. The eggs were taken out at a time around about 24 hours, having an exact time to remove the eggs would have eliminated errors.