Colourful Skittles

Skittles

Aim: To separate colours by using the process of chromatography.

Materials:

1. Skittles
2. Water
3. Petri dish


Process:

Step 1: Get your petri dish 
Step 2: Now get your skittles (Put them in the petri dish in a star shape! If you don't the effect won't be as good).
Step 3: Now get some water and pour it in the petri dish. (Also make sure that you don't drown the skittles in water).


Findings: Me and my group started off with 5 skittles (They were in a rainbow order. You can put the skittles in any colour order you want but different colours look more nicer). Then we put them in a star shape, then we re-ordered them in a rainbow order. Finally we put the water in the petri dish and watched the result!

What did the colours do? The colours all come to the middle of the petri dish. At the end they mix together. Our final colour turned out to be Orange.
Did the colours mix together? Yes, the colours do mix a tiny bit when coming into the middle. They all mix at the end.

Reflection

I actually really enjoyed this experiment because we got to learn about Chromatography! I had never really learned about Chromatography before and enjoyed learning about it. We also got to eat the skittles at the end! I also learnt that when the experiment has ended you should NOT drink the water. 

Chromatography - Rainbow paper - Science

                        Chromatography



Aim: To separate colours by using the process of chromatography.



Definition: A technique for separating the different parts of a mixture / solid using liquid.





Name of experiment: Rainbow paper

Materials:

1. Chromatography paper
2.  A cup
3. Green felt pen
4. Red felt pen
5. Black felt pen
6. Ruler
7. Water

Process:

Step 1: Get your Chromatography paper and draw 1, 2 cm line near on end of the paper.

Step 2: On the other end draw a 1 cm line
Step 3: On the 1 cm line draw a black dot, a green dot and a red dot. Make sure they're not too big/little.

Here is an example: (You can barley see the 2cm line the next step will tell you why).

Step 4: Fold the 2 cm line
Step 5: Get your cup and fill it with water
Step 6: Next put your piece of paper in the cup.
Make sure the water JUST reaches the dots.



Findings: I found out that the colours move quite quickly at first but slow down afterwards. You have to be patient and careful for this experiment.

Reflection: What have I learnt from this experiment? I learnt that  Chromatography is a thing! I had never heard of it before, and learning about it was pretty cool.