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Are Dark Green, Leafy Veggies Higher in Vitamin C Content Th

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by

amina kuburovic

on 5 January 2015

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Transcript of Are Dark Green, Leafy Veggies Higher in Vitamin C Content Th

Question
Are Dark Green, Leafy Veggies Higher in Vitamin C Content Than Their Lighter-Colored Counterparts?
Hypothesis
My hypothesis that the darker veggies are going to have more vitamin C but it was the opposite.
Procedure
Variables
My independent variable is
type of veggie
My dependent variable
amount of vitamin c in the veggies
My constant variable
amount of iodine
amount of of pulp used
amount of cornstarch and water

Thank you!
This project is brought to you by
AMINA KUBUROVIC
A1 Science
Ahmed
11/28/14
Photos
Are Dark Green, Leafy Veggies Higher in Vitamin C Content Than Their Lighter-Colored Counterparts?
Data Table
We Find Out The One With More Vitamin C
First pulp all of the veggies in a blender. Strain and keep the juices.Mix cornstarch (1 tbsp) and water together to make a paste. Add 250ml of water and boil for about 5 minutes. Using a dropper or a pipette, add 10 drops of the boiled solution to 75ml of water.Add iodine to the mixture until it turns a dark-purple color.With a dropper, add 5ml of the iodine indicator solution to a standard 15ml test tube. Using a clean dropper (to prevent contamination), add 10 drops of the juice into the test tube. Clean the dropper and do the above for each juice sample.Compare which one turns a darker color. The darker color means there is less Vitamin C present in that particular sample. I did 3 trials to get the most accurate data.
Full transcript