The Naked Egg Lab

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by wbumpass
Last updated 6 years ago

Discipline:
Science
Subject:
Experiments
Grade:
9

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The Naked Egg Lab

The Naked Egg Lab

Design

Independent Variable-concentration of molassesDependent Variable-% change in mass of the eggConstants-eggs soaked for 2 days, type of egg, type of syrup, 100ml of solution

Starch in a Baggie- The starch was too large to fit through the selectively permeable bag, but the iodine was small enough to diffuse through the bag and turn the starch black. Egg in Alcohol- The egg yolk was placed in ethanol, and was fried because the ethanol was very hypertonic causing dehydration of the yolk.

Pre-Lab

90% molassesBy:Kate Dyche

How does varying the concentration of molasses affect a naked egg?

Question

If the concentration of molasses increases, then the mass of the egg will decrease because molasses is hypertonic and will dehydrate the egg.

Hypothesis

Materials

cup, beaker, balance, egg, water, vinegar, molasses, spoons, permanent marker

Procedure

1. Mix 10ml of water and 90ml of molasses.2. Mass the egg.3. Record data.4. Pour solution onto egg.5. Wait 2 days.6. Use spoon to remove egg from cup.7. Re-mass the egg8. Record data and description of the egg.

Data

The egg was shriveled and had turned a dark brown color after sitting in a 90% molasses solution for two days.

Analysis

Conclusion

1. Hypothesis: a. If the concentration of molasses increases, then the mass of the egg will decrease because molasses is hypertonic and will dehydrate the egg. b. My hypothesis was supported because the mass of the egg decreased as the concentration of molasses increased. c. In 90% molasses solution the egg decreased by 35.8 grams, proving my hypothesis correct.

2. Sources of Error: a. A source of error could have been that I did not measure exactly 10mL of water and 90mL of molasses. b. This error might have affected the results because the change in mass is determined by the amount of molasses.3. Everyday life or Connection to class a. In class we were learning about hypotonic and hypertonic solutions and what it does to our cells. b. It is important to understand this concept so we can keep ourselves healthy. c. I experience this concept everyday when I eat or drink something.


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