I am truly sorry ms Thompson for being so late on this project. I had originally thought i uploaded this days ago, but I failed to notice an error on a seprate tab that wouldn't allow me to publish my results of the experiment
Discussion of Egg Osmosis Experiment
In the egg osmosis project, our group attempted to learn more about osmosis by placing two eggs in a hypotonic and a hypertonic substance respectively. Osmosis is the movement of water particles from a place of higher concentration to a place of lower concentration through the selectively permeable membrane. The conclusion of my experiment confirmed that my hypothesis is correct.
The first step of my experiment was to soak two eggs in vinegar for 24 hours in order to remove the hard shell and expose the rubbery semipermeable membrane. This made osmosis and diffusion through the egg membrane easier since the egg shell was already dissolved. The dependent variable is the variable that will change whenever the independent variable is altered, which is the egg in this case; the independent variable is the variable that can cause changes to the dependent variable, which for this experiment is blue tinted water and molasses. Egg 1, the egg in the blue water and Egg 2, the one in molasses were both placed in 150 ml beakers and left for 24 hours. Note that the same volume for water and molasses was used.
As expected, both eggs and substances changed physically. Egg 1 before submersed into 150 ml of blue water had a mass of 1.8 grams. After 24 hours in the water the Egg 1's mass increased to 62.5 grams and the volume of water in the beaker decreased to 140 ml. I then popped Egg 1’s membrane with a toothpick and the water inside bursted out through the small hole. Since there was a higher concentration of water outside the egg than the inside, the water outside moved into the egg due to osmosis turning the inside of the egg a pale blue. Egg 2 before submersed into 150 ml of molasses had a mass of 2 .0 grams. After 24 hours Egg 2 looked considerable smaller and deflated, after weighing I found that Egg 2's mass had decreased to 44.5 grams while the molasses volume increased to 155 ml. After popping the egg's membrane the inside had gone brown as well as stickier.
My observations overtime where the following; that the eggs changed in mass, volume and appearance even in a short time period. Whilst the liquids used also changed in volume. On reflection further variables would need to be investigated if the experiment was to be repeated. Such as the impact of temperature (room as well as liquid) , absorption rates of the membrane over varying time periods and types of eggs used (organic vs non-organic).
The first step of my experiment was to soak two eggs in vinegar for 24 hours in order to remove the hard shell and expose the rubbery semipermeable membrane. This made osmosis and diffusion through the egg membrane easier since the egg shell was already dissolved. The dependent variable is the variable that will change whenever the independent variable is altered, which is the egg in this case; the independent variable is the variable that can cause changes to the dependent variable, which for this experiment is blue tinted water and molasses. Egg 1, the egg in the blue water and Egg 2, the one in molasses were both placed in 150 ml beakers and left for 24 hours. Note that the same volume for water and molasses was used.
As expected, both eggs and substances changed physically. Egg 1 before submersed into 150 ml of blue water had a mass of 1.8 grams. After 24 hours in the water the Egg 1's mass increased to 62.5 grams and the volume of water in the beaker decreased to 140 ml. I then popped Egg 1’s membrane with a toothpick and the water inside bursted out through the small hole. Since there was a higher concentration of water outside the egg than the inside, the water outside moved into the egg due to osmosis turning the inside of the egg a pale blue. Egg 2 before submersed into 150 ml of molasses had a mass of 2 .0 grams. After 24 hours Egg 2 looked considerable smaller and deflated, after weighing I found that Egg 2's mass had decreased to 44.5 grams while the molasses volume increased to 155 ml. After popping the egg's membrane the inside had gone brown as well as stickier.
My observations overtime where the following; that the eggs changed in mass, volume and appearance even in a short time period. Whilst the liquids used also changed in volume. On reflection further variables would need to be investigated if the experiment was to be repeated. Such as the impact of temperature (room as well as liquid) , absorption rates of the membrane over varying time periods and types of eggs used (organic vs non-organic).