Gummy Bear Lab
Alexandra Montalvo, November 28, 2014
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Hypothesis: What do you think will happen to a gummy bear when you put it in water overnight?
- I think if you leave the gummy bear in water over night, it should expand its size.
Procedure: Part A: Choose one gummy bear from the container on your table. Use the equipment available to measure your gummy bear and record the data in the chart for Day 1.
Experiment Data:
Day 1: Bear Color: Green Length: 2cm Width: 1cm Thickness: 1cm Volume: 2cm3 Mass: 2.2 g Density: 1.1 g/cm3 Volume Change: 50 mL
Procedure: Part B:
Put the bear in a cup labeled with your name and class period. Add 50 ml of water to the cup and allow it to sit overnight. On Day 2, remove the gummy bear from the cup of water and use a towel to dry it off to prevent it from dripping all over the place. Repeat the measurements from Part A and record your data in the correct portion of the chart. Determine the amount of change for each measurement and record in the chart.
Experiment Data:
Day 2: Bear Color: Green Length: 4 cm Width: 2 cm Thickness: 2 cm Volume: 16 cm3 Mass: 8.7 g Density: .54 g/cm3 Volume Change: 40 mL
Amount of Change (Day 1 & 2): Bear Color: Green Length: 2 cm Width: 1 cm Thickness: 1 cm Volume: 14 cm3 Mass: 6.5 g Density: -.56 g/cm3 Volume Change: 11 mL
Procedure: Part C:
Put the water bear in a cup labeled with your name and class period. Add 50 ml of salt water to the cup and allow it to sit overnight. On Day 3, remove the gummy bear from the cup of water and use a towel to dry it off to prevent it from dripping all over the place. Repeat the measurements from Part B and record your data in the correct portion of the chart. Determine the amount of change for each measurement and record in the chart.
Experiment Data:
Day 3 (Salt Water): Bear Color: Light yellow Length: 3.4 cm Width: 2 cm Thickness: 1.5 cm Volume: 10.20 cm3 Mass: 5.9 g Density: .59 g/cm3 Volume Change: 1 mL
Post Lab Questions:
1. Yes, my hypothesis was correct. The measurements in day 2 expanded in its size.
2. The volume change is bigger because since the measurements changed, the volume changed a good amount.
3. Yes, there was a change in density because there was a bigger difference from the mass and volume of the gummy bear.
4. My measurements compare to my classmates because all of our measurements were close in everything.
5.The results that occurred in day 2 and 3 happened because it was already expanded in day 2 and had all the water inside of it. Day 2 had bigger measurements than day 3 because the salt water made the gummy bear smaller in size.
6. The volume expanded bigger than the day before in days 1 and 2. In day 3, the volume decreased its volume because of he salt water causing it to decrease its size.
7. To test another variable, I would change the liquid to something different. Maybe like a soda, such as sprite, or even putting it into oil. By changing the liquid to something different, hat might make the experiment and measurements different.
8. The biological process that occurs in this lab would be osmosis. Osmosis moves from a high concentration gradient to a low concentration gradient. That's what basically happens in this lab with the gummy bear. The gummy bear moves from having the water outside of it to inside the gummy bear. Also with the salt water, the salt water basically removes all the water out of the bear.
