GUMMY BEARS

QUESTION

• What would happen if we put the gummy bears into milk and soap, would it be hypotonic, hypertonic or isotonic?

BACKGROUND RESEARCH

• Gummies in a hypotonic solution grow instead of shrink contrary to the basic principle of hypotonic solutions.
• Passive transport is a transfer of molecules through a semi permeable membrane from high concentration to a lower one.

BACKGROUND RESEARCH

• Cells with the same concentration as its environment does not grow or shrink and the process in which molecules move is known as isotonic in this state.
• Water molecules need to go through a water channel to enter a cell.

HYPOTHESIS

• If we put a gummy bear into milk, then the gummy bear would grow, because milk is an hypotonic solution compared to water. If we put a gummy bear into soap, then the gummy bear would shrink, because soap is usually hypertonic

VARIABLES

• Manipulated: different solution, one is orange juice, one is soap.
• Responding: the size of gummies,
• Controlled: same cups, same amount of solution at first, same gummies.

MATERIALS

• 2 gummies
• Scale
• Cups
• Orange juice and soap

PROCEDURE

• Use beakers to measure out 75ml of soap solution and orange juice
• Put these two solution into 2 cups.
• Use the scale to measure out the mass of gummy bears.
• Put gummies into the cups.
• Measure the gummy bears' weight after 24 hours.

DATA

• PreLab Red gummy bear: 2.3g.
• Green gummy bear: 2.5g.
• Post lab
• Red: 9.4g
• Green: 5.3g

CONCLUSION

CONCLUSIONS

• We predicted the soap to be hypertonic and the orange juice to be hypotonic. The gummy bear in the orange juice, indeed, proved that the orange juice was hypotonic.

CONCLUSIONS

• However, the gummy bear in the soap proved the soap as hypertonic. Although our hypothesis was incorrect, we ended up enjoying the experience of testing with cell transport.

CONCLUSIONS

• Two improvements for this lab would be: Use more gummy bears, and Seal the top of the cup overnight

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