Egg Lab

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Egg Lab Report The egg lab taught about diffusion, osmosis, and the different types of solutions, hypertonic, hypotonic, and isotonic. In our lab, we used an egg, a cup, a string, a rubber band, a ruler, a graduated cylinder (100 ml), saran wrap, vinegar, a soap solution, a salt solution, and a corn syrup solution. We measured our egg by wrapping the string around it. Our egg was 13.5 cm. During testing, we found our hypotheses were not always right.
Day one of testing, we used vinegar. We thought the vinegar would dissolve the egg’s shell and change the color of the egg slightly. We placed the egg in the cup, then poured 110 ml of vinegar over it. We then covered the cup with saran wrap and kept it down with a rubber band. On day two of testing, we found our …show more content…
The shell dissolved to show the membrane, but there was no discoloration. We touched the egg and it was very rubbery, almost felt like skin. We measured the egg and it was 15.5 cm. The vinegar was now at 80 ml. The vinegar acted as a hypotonic solution and the egg through osmosis absorbed the vinegar. We then tested a soap solution. Our soap solution was made of 56 ml of water and 17 ml of soap. We poured the solution of the egg. Our hypothesis stated that the solution would be hypertonic and dissolve the rest of the membrane. On day three, the size of the egg, but the volume of liquid changed slightly to 60ml, barely noticeable. The change in volume could also be attributed to a small amount of spillage when trying to measure the volume. We discovered the soap solution was isotonic. The membrane was still intact too. Our hypothesis was not correct. We decided to test the salt solution next. We poured the solution, 10 ml of salt and 73 ml of water, over the egg. We stated this would cause a hypertonic solution. On day four, we found that we were wrong, again. The egg stayed the same size, but the volume of the solution gained 6 ml.

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