Chromatography - Science

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

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

Rainbow paper

Materials:

1. Filter paper 

2. Container

3. Felts - {Black, Red and Green} 

4. Water 

5. Pencil

6. Ruler 

Process:

Step 1: With a ruler and pencil and at the bottom of the filter paper rule 1 cm, after that rule the top of the filter paper 2 cm. 

Step 2: With 3 colored felts {Black, Red & Green} Put a small circle on the pencil line using each color.

Step 3: At the 2 cm pencil line we folded it back.

Step 4: After that we hooked the bent part on the container, and left it there.

Step 5: The teacher came around and poured water into the container. 

Step 6: After the water went in. We had to wait and after a few seconds the colors started rises to the top of the filter paper.

Findings: Write about what happened. As you can see once the water went in the container, the 3 colors from the felt pens started rising to the top of the filter paper.

Reflection: What have I learnt from this experiment?  That water can make felt pens rise on filter paper.

Skittles

Materials;

1. Petrie dish  
2. 5 Skittles {Purple, Green, Red, Yellow and Orange}  
3. Water 

Process:

Step 1: As a group we went up to the teacher and got a petrie dish that had five different colored skittles {Purple, Green, Red, Yellow and Orange} in it.

Step 2: When we got the petrie dish with the 5 different colors, we set the skittles {Purple, Green, Red, Yellow and Orange} on the sides with the same lengths apart.

Step 3: The teacher came around and poured some water into the petrie dish.  

Step 4: After the water went in. We had the wait and after a few seconds the colored started evacuating.  

Step 5: When the progress finished, as a group we shared the skittles because we were allowed to eat them. 

Findings: Write about what happened. As you can see once the water went in the petire dish the 5 skittles started dissolving.  

Reflection: What have I learnt from this experiment?  That water can make skittles dissolve in color.

What did the colours do?  Once the skittle started dissolving, the water turned different colors. 

Did the colours mix together?  Yes the colors did mix's together.

Why or why not?  Only because when the skittles started dissolving the color started evacuating.