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Egg Lab

Lab Write UP

Hannah Lee

on 4 October 2012

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Transcript of Egg Lab

By: Hannah Lee, Sarah Lawson, Jordan Strickland, Jesseca Johnson, Dejah Mayfield Egg Lab When you put a naked egg in syrup and then water what will happen to it? Problem: If we put a naked egg in syrup, then it will shrink because the water from inside the egg will move to the outside to reach homeostasis.

If we put a naked egg in water, then it will become swollen because the water outside the egg will move inside the egg to reach homeostasis. Hypothesis a naked egg (egg soaked in vinegar)
water(1 beaker full)
syrup(1 beaker full)
scale Materials: Day Experimented Control Data
Mass(grams) Circumference(cm) Mass(grams) Circumference(cm)
1 82.3 16 71 17.5
2 68.3 15 70 17
4 89.7 16 70 17 Data Table(quantitative) "Experimenting with Naked Eggs." Exploritorium. N.p., n.d. Web. 24 Sept. 2012.

"How to Make a Naked Egg." Imagination Station. N.p., 2012. Web. 24 Sept.
2012. <http://www.imaginationstationtoledo.org/content/2011/04/how-to-make-a-naked-egg/>. Citations Research: Syrup
egg white: 90% water and syrup: 20% water
The water from the egg will move to the outside, making the egg shrink
the water outside will move into the egg making it swell up Procedure: 1. Make the naked egg by soaking the egg in vinegar for one day.
2. Put the egg in a beaker of syrup(independent variable) and leave it in there for a day.
3. Measure the mass and circumference(dependent variable).
4. Then, put the egg in a beaker of tap water(independent) and leave it in there for a day also.
5. Measure the mass and circumference(dependent).
6. The control data is given to you by your teacher. Data Table(qualitative) Days Data
1 very soft, yellow, looked weak, smelled like vinegar
2 squishy, small, rotten egg smell
4 firmer, bigger, rotten egg smell Egg Lab Graphs Errors not here day 3 so the egg was in the water for more than 1 day
didn't write hypothesis until after the experiment My conclusion is my hypothesis is correct, that a naked egg will shrink and then swell when put into syrup and then water. I figured this out because from day 1 to day 2, the circumference shrunk one centimeter. Also the mass shrunk too from 82.3 to 68.3 grams. Then from day 2 to day 3, the circumference grew by one centimeter again and the mass went up to 89.7 grams. Conclusion Lab Questions 1. The independent variables were the water and syrup and the dependent variables were mass and circumference.
2. The control group was vinegar and we need a control group so you can compare your data to it to see the differences.
3. Our egg was swollen when we put the egg in water because there was more water on the outside than on the inside that the water moved into the egg to reach homeostasis.
4. Our egg shrunk when we put the egg in syrup because there was more water on the inside than the outside so the water moved out of the egg to reach homeostasis.
5. The results we discussed from questions 3 and 4 supported my hypothesis because when we put the egg in syrup the mass and circumference shrunk to 68.3 grams and 15 cm. Then, when we put the egg in water the mass and circumference grew to 89.7 grams and 16 cm.
6. Osmosis is the diffusion of water and it is a passive transport because it moves from a high concentration to a low concentration.
7. One difference between passive and active is that active uses ATP and passive doesn't. Another difference is that active transport goes against the concentration gradient. Also, types of passive transport are diffusion, osmosis and facilitated diffusion and active transports would be ion pumps and endo/exocytosis.
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