What is the purpose of the gummy bear osmosis lab?
The Gummy Bear has a selectively permeable coating which will allow water molecules to diffuse across, but inhibiting other larger molecules. In this osmosis experiment the water molecules move into the bear, thus enlarging it.
What is the hypothesis of the gummy bear experiment?
Hypothesis for Growing/Shrinking Gummy Bears When a gummy bear is placed in a hypotonic solution (e.g. water) then it will increase in mass and volume. On the other hand, its mass and volume decrease when placed in a hypertonic solution (e.g. salt water).
What are the variables in the gummy bear experiment?
Introduction
| Research Question | How do different solutions cause gummy bears to change in size? |
|---|---|
| Age: | 4th grade and up |
| Time to complete: | 2 hours or more |
| Safety concerns: | none |
| Independent variable: Type of solution Dependent variable: Volume of gummy bear | Controlled variables: Time soaked in solution Type of gummy bear |
Why does the gummy bear experiment work?
When you put a gummy bear in water, it is a solute, and the water molecules are a solvent. Since the gummy bear does not contain water (remember, the water was removed when the gummy bear was made), water now moves into the bear by the process of osmosis.
How are gummy bears measured?
Measure the length of the gummy bear — from its feet to its head — with the ruler to the nearest millimeter. Measure the width of the bear — from one arm to the other — at its widest point to the nearest millimeter. Measure its thickness with the ruler from front to back to the nearest millimeter.
Why do gummy bears absorb water?
When Gummi Bears are in water, water molecules (the solvent) move into the bear by means of osmosis. The gelatin makes the Gummy Bear act more like a sponge by absorbing water instead of being dissolved in it.
What is the mass of a gummy bear?
As did the Volume, the Mass was the same as well in the experiment for all the gummy bears. the mass was 2.9 grams.
What is the control group in gummy bear experiment?
The control group was the gummy bear soaked in regular water. Pure Water: Dependent Variable: If the gummy bear is put in pure water, then the water will stay on the outside of the gummy bear not affecting it.
How do gummy bears grow science fair project?
When a gummy bear is placed in a glass of water, it becomes the solute. The solute is the dissolved material in the solution. The water is the solvent. Since the gummy bear does not contain water, when it is added to a glass of water, the water moves into the gummy bear by the process of osmosis.
How could you determine the mass of a gummy bear?
Measure its thickness with the ruler from front to back to the nearest millimeter. Multiply the three measurements together to determine its volume. Place the gummy bear on a scale to find its mass to the nearest tenth of a gram. Divide the mass by the volume to determine its density.