4. Discussion

4. Discussion


4.1 Analysis of results
For the yellow dye of the skittles and the common yellow dye could not be compared because the second experiment of the yellow dye of the skittles were to faint so we could not measure the distance travelled by the dye of the skittles.
For the red dye, we can see that the Rf value of dyes that used was somewhat the same since the difference is only 0.03 (as shown in the table).
For the green dye, we can see that the Rf value of dye in the skittle is very little, since the difference between the common dye and skittle dye of green is 0.23 (as shown in the table), thus it shows that the dye in the skittle and the food colouring is different and not the same.



4.2 Key findings

Since Rf value for the red skittle and the red food colouring is somewhat the same, it means that the dye used might have been the same. The Rf value for the green skittles and the green food colouring is very different, thus, we can infer that the dye used it very differently. The Rf value of the yellow dye and yellow food colouring dye can’t be compared.

4.3 Explanation of key findings
This shows that they probably used the red food colouring dye to make the red skittle while for the green skittle they used a different one. As for the yellow skittle, we can’t do anything.

4.4 Evaluation of Hypothesis

Our hypothesis was wrong as the Rf value of the common dyes to the food colourings are different except for the red one and we couldn’t compare the yellow one.


4.5 Areas for improvement


Limitations
Areas of improvement
Reasons
In the area of results
Time constraint
done all the experiments all at once
the results could have been more accurate
In the area of communication
One does not understand the other
We could have communicated better
to have avoided misunderstandings.

In the area of results for the common dyes
Unavailability of resource
Find the Rf values in common dyes on the internet
More accurate then we can compare the food colouring dye of skittles to it.




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