How Different Liquids Effect the Weight of a Gummy Bear After 24 hours PDF

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This is an experiment for gummy bears in liquid...

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How Different Liquids Effect the Weight of a Gummy Bear After 24 hours Elliot Popenhagen Western Governor’s University

Section 1: Introduction and Literature Review:

A: I was not sure what kind of experiment I wanted to do. I like to eat gummy bears so I thought it would be interesting to see how soaking different liquids. While searching for osmosis and diffusion related articles, I came across a science experiment with an egg that talks about osmosis. I did not know a lot about Osmosis but what I learned from both sources of my research is that different liquids affect the rate and result of osmosis. First, an important point is that diffusion is simply the natural evening out of solutions in a higher gradient moving to a lower gradient overtime. “Osmosis, however, only happens in solutions and across semi-permeable membranes” (Entress,2020). Gummy bears are semi-permeable membrane since they are composed of gelatin, sugar and water. In this source, the author carries out an experiment with eggs in which he tests how different solutions affect an egg yolk. He first dissolved the shell in vinegar and then soaks the yolks in water and corn starch for 24 hours respectively. This made me want to see the effect of vinegar on a gummy bear because I think it will dissolve just as the egg shell did. Then, I managed to find an article about an experiment similar to mine. In this experiment, the teacher instructs the students to soak the gummy bears in 2 different solutions and then use one gummy bear as a control and not soak it in anything. He asked the students to record the results by measuring the length, width and height so that the volume can also be determined. The teacher explained what the different between osmosis and diffusion once again. A student explains, “molecules move down their concentration gradient, without any work being done, so no energy input is required” (Bonney, 2014).

Hypothesis B. I hypothesize that if I soak one gummy bear in vinegar, one gummy bear in salt water, one gummy bear in regular water and one left in just air the one in regular water will have the most change in weight. I will be measuring the weight of the gummy bears with a digital scale and I will use grams as the unit. C. My hypothesis is consistent with the publication that evaluated effects of liquids on egg yolk (Entress,2020). The egg yolk that was soaked in water swelled more. I think that the gummy bears will act similarly and swell in water. Methods

D. My independent variable was liquid type. I tried 3 different liquids, water (tap water), vinegar and salt water. I chose these because they were discussed and/or used in the literature I reviewed so I wanted to have an accurate prediction. E. My dependent variable is the weight of the gummy bears. This was measured in grams using an electric scale. The unit of measurement was grams. F. I controlled for evaporation by wrapping each cup with the liquid and gummy bears in aluminum foil. Since the liquid in the cups all react differently with air in the atmosphere, I didn’t want that the skew my results. I also made sure I used the same color gummy bear for all three liquids. I am not certain if the different colors matter, but I wanted to make sure the bears were as similar as possible.

G. Materials used for this experiment: -Gummy bears -three similar cups to hold the liquid and bear -Aluminum foil to cover the top of the cups -A scale that can measure grams to measure the weight of the bears -A level surface to keep all the cups on for 24 hours. -1 cup of white vinegar -1 cup of tap water -1/4 cup sea salt and ¾ cup water (salt water) -Measuring cups to measure the liquids. -a phone or something or timer. H. Procedure First, I set out the cups on the counter. Then, I measured out the vinegar and poured it into the cup. I measured 1 cup of tap water and put that in the next cup. For the salt water I had to measure out ¼ cup of sea salt and ¾ cup tap water and then I stirred until the salt was completely dissolved. I chose 3 red gummy bears out of the bag. I weighed each gummy bear individually before placing them in their respective cups. I then placed the aluminum foil over the top of the cups and then set a timer on my phone for 24 hours from then.

Results I.

I had a very odd outcome. When I checked the gummy bears 24 hours later and they had all dissolved. Some of them were somewhat visible (pictured below) but not solid enough to collect data from by any means. I think this happened for one of two reasons: 1. I put too much liquid in the cups. Or 2. I left the gummy bears soaking for too long. It’s even more odd to me because when I read examples of different experiments on the internet, I found one that used this amount of liquid. I suppose I should have done a lot more research about the amount of liquid and time that I needed to use. The table with the starting and ending weight is shown below

Liquid Type Water Salt Water Vinegar

Original Weight 2.25g 2.25g 2.24 g

Final weight after 24 hours 0g 0g 0g

J. Conclusions K. My hypothesis results only those three

was neither confirmed nor disproven. My proved that gummy bears would dissolve in liquids.

L. I used large cups for this experiment I think that could have affected the outcome since there was air in between the liquid and where and the top of the cup (I did cover the top of them cups with foil). I also think that I used too much liquid. M. The biggest mistake I made was that I used too much liquid. I did not have a reference that provided me with units of measure for the water, so I guessed. Next time I would use much less water.

References Bonney, K. M. (2014). From Gummy Bears to Celery Stalks: Diffusion and Osmosis. Journal of College Science Teaching, 43(6), 72–76. ENTRESS, C. (2020). Learning by (seeing) osmosis. Science Scope, 43(6), 60–64....