For my science fair project, I will be doing the naked egg project. A “naked egg” is an egg that has no shell. During this procedure, a chemical reaction between the egg shell and vinegar occurs. The vinegar eats away or dissolves the eggshell and leaves the inside of the egg intact and in the shape of the shell. A video I viewed of this experiment stated that after it eats the shell away, the egg could turn out to be rubbery, kind of like a bouncey ball. Due to history and past experimentation, the experiment of the naked egg illustrates the concepts of chemistry.
The process to make a naked egg is very simple. Place your egg in a cup and carefully fill the cup with vinegar. Make sure that you completely cover the egg with vinegar. If the egg begins to float, be sure to have enough vinegar in the cup to mostly cover the egg. Once this is done you will have to wait for the acetic acid in the vinegar to react with the calcium on the egg shell. You will begin to see bubbles begin to form on the egg shell. These bubbles are made because the reaction is causing carbon dioxide to be released. For a good portion of the shell to be removed, you will have to wait approximately 12-24 hours. You will know when you are making good progress when there is a white frothy scummy layer on the top of the vinegar. Next, you will be able to remove the egg after a day of being soaked in the vinegar. You may want to pour the vinegar into another cup and catch the egg in your hand. Trying to dig the
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I will test the experiment to observe the process of osmosis. The membrane of the egg will all that will be left once the egg has been soaked in vinegar for the significant amount of time. After viewing a video over the experiment and reading on the background and science of it, I will understand why everything happens the way it does. This chemistry experiment has many learning experiences behind it that I will
For each of the condition, about 35 milkweed bug eggs will be placed in clear container (5”x7”x4”) with a fine netting between the lid of the container and the container walls. The netting prevents the milkweed bugs from escaping while allowing for air to come in. Each container
So go try something, because it may turn out great. And always keep an open mind because there is something your missing if you don't. Through a comparison of the eggs to fear, judgement, and friendship, the author pulled these themes together during the adventure the characters experienced. When the character first saw the eggs and ham he felt they would taste disgusting. And he was scared to try it.
“Consider how easy it is to squeeze an empty soda can compared to how easy it is to crush a thin aluminum tube. If you cut the soda can open and curl the aluminum sheet into a smaller diameter it gets much harder to dent or deform. This has to do with leverage. If you take a wire or bar of metal it is much easier to bend, requires less force, if your hands are widely separated because you have more leverage. If the thickness of metal wall stays the same then larger cans are easier to crush.
During the story, they liken the process of not consuming the egg to being sober and it was made abundantly clear when T’Gatoi said, “Sit down there with your sisters and enjoy not being sober. You had most of the egg. Lien, come warm me.” (“Bloodchild”). In some aspect, the eggs might be used as a pain killer as well given how Gan was given more than normal the day before the egg laying.
One nice 35 degree day in the fridge came an unusual sound. “Ahhhh” came a scream. As alarmed civilians looked up they couldn't see where the scream was coming from. Confused they looked around but no one found anyone who was in trouble or in pain.
Additionally, it was difficult obtaining a piece of rhubarb that was thin and particularly red, therefore the effect could not be best observed in the cells. Part B: Design your own experiment Parts of this practical were taken and slightly altered from the following link http://www.markedbyteachers.com/gcse/science/investigate-the-effect-of-surface-area-on-osmosis-in-potato-tissue.html Aim: To observe the effect different surface area: volume ratios have on osmosis in potato tissue. Hypothesis: If the potato has a larger surface area: volume ratio, the quicker osmosis will take place and the larger the mass will be at the end of the experiment, therefore the difference in mass of the potatoes from the start of the experiment to the end of the experiment will be larger. Additionally, the potato pieces left in a saltwater solution will decrease in mass, whereas the pieces left in water will increase in mass.
For this lab I will be using water and sucrose to demonstrate the rate of osmosis. In this lab I will be exploring how temperature impacts the rate of osmosis by placing pieces of potato of equal size in solutions of different temperatures and observing the change in mass of potato after a given period of time. The change in mass will indicate the rate of osmosis.
The first crack in the egg is caused by greenhouse gases. A greenhouse gas (GHG) absorbs and emits thermal radiation (heat). When there is GHG in the atmosphere, the gas creates a process known as the greenhouse effect. The greenhouse effect fractures our egg just a little more by causing the earth’s temperate to increase to a dangerous amount causing sea levels to rise, wild fires, and ozone layer depletion (National Geographic).
Step 3: After, shell is removed, carefully remove egg from vinegar and place on a paper towel. Step 4: Record observations of the egg after vinegar. (texture, how it looks, etc……) Step 5: Get your triple beam balance and weigh the egg in grams (remember to place a paper towel underneath egg while weighing) Step 6: Record Measurements Step 7: Place an egg in a one of your 2 cups before placing egg name cup distilled water Step 8: Pour distilled water on top to cover the egg Step 9: Place plastic wrap on top of cup to cover the egg filled with distilled water Step 10: Now take your other egg from the vinegar used to take out shell. Step 11: Record observations of the egg after vinegar. (texture, how it looks, etc……) Step 12: Get your triple beam balance and weigh the egg in grams (remember to place a paper towel underneath egg while weighing) Step 13: Record measurements Step 14: Place the second egg in your second cup Step 15: Pour corn syrup on top of the egg to cover
This reaction is an acid base reaction thus results expected to show some carbon dioxide. Method: A 20ml vinegar is poured in the 250ml bottle. A funnel is used to pour 3g of baking powder in the balloon by sticking the funnel in the neck of the balloon to easily allow the baking powder inside without it spilling on the sides. Slowly but surely the balloon is placed on the mouth of the bottle by stretching it gentle so that it does not tear. A 10cm string is used to tie the balloon on mouth of bottle so that air may not intrude and no air formed be lost.
Osmosis Lab Report Research Question: How does the change in the concentration of a sucrose solution affect the process of osmosis in a potato cell by measuring its mass? Background information: 1 Osmosis is the process by which a liquid passes through a semi-permeable membrane, moving from an area with a high concentration of water to a low concentration of water. There are various factors that affect osmosis such as: concentration, surface area and temperature. The concentration of solutions can affect the rate of osmosis, as there is more difference in the concentration of the solutions, which means osmosis, will take place quicker. Surface area could affect osmosis based on the ease by which molecules can get through the semi-permeable
Rubbing, or isopropyl, alcohol is at least 70% alcohol and therefore less than 30% water. This should cause water to move from the egg into the solution, and the egg should lose mass. In addition, the egg may appear white and
This experiment has to be carried out carefully
Internally fertilized eggs are deposited in gelatinous mass. The large, yolky egg of terrestrial snails are deposited in moist environments, such as leaf litter, and a calcareous shell may encapsulate them. In marine gastropods, spiral cleavage results in free swimming trochophore larva that develops into another free swimming larva with foot, eyes, tentacles, and shell called a veliger larva. Sometimes, the trocophore is suppressed, and the veliger is primary larva. Torsion occurs during the veliger stage, followed by settling and metamorphosis to the
Artificial reproduction is the process in which new life is created in an unnatural way or in a synthetic environment. Artificial reproduction includes the process of fertility in an uncommon way. The process of synthetic fertility uses Assisted Reproductive Technology (ART) to artificially create an organism. ART is a type of reproductive technology used in treatment in which the removal of eggs or sperm are manipulated to create a distinct being outside the body. There are several artificial reproduction/fertility methods that use ART such as: artificial insemination, test-tube fertilization, and surrogate motherhood.