Nuestro Laboratorio Difusión

 By:Grace Balatbat, Shannon Miyoshi, Alanna Johnson, and Michaela Lantrip

Hypothesis:

My group and I believe that the starch in the bag with hot water will seep through the bag first.

 Materials:

Starch, Timer, Iodine, Beakers, water, cylinders, Ice

Thermometer, and a hot plate.

 Procedures:

We first took three plastics bags and we put a spoonful of starch in each.

Next we put about 50ml of hot, cold, and room temp water in each bag.

After we took three beakers and put 100ml of iodine in each.

We then placed each bag in the iodine for two minutes

Conclusion

 The purpose of this experiment was to see how different temperatures affect a cells diffusion rate. We set up a controlled experiment where we put equal amounts of starch and water in each bag and had one bag that stayed in room temperature water. Our results from our experiment show that the hot water showed diffusion fastest, the cold showed the diffusion second fastest, and the room temperature water and starch showed diffusion slowest. The results support our hypothesis because the hotter temperature made the starch seep through the bag fastest. Our experiments had sources of error when at first we put the different temperature water in the beaker instead of in the ziplock bag.

Pictures and Videos

 

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