Sam's Schoolwork - Chemistry - Lab 1.3

Paper Chromatography

Problem
How many components are present in an ink sample?

Prediction
I predict that the non-primary colors will be made up of more inks; Black, orange, purple, green and grey will be made up of more pigments than the red, blue, and yellow ink.

Design
I followed the instructions a stated in the textbook.

Materials
I followed the instructions a stated in the textbook.

Procedure
I followed the instructions a stated in the textbook.

Evidence
The ink separated into the pigments as follows;
Grey Ink: Blue, green, and black
Red Ink: Red
Orange Ink: Yellow and red
Yellow Ink: Yellow
Green Ink: Blue and yellow
Blue Ink: Blue and purple
Purple Ink: Blue and red
Black Ink: Yellow, blue, green and orange

Analysis
While my earlier prediction, that non primary colors will be made up of different inks, was correct, the fact that the blue ink was made of both blue and purple pigments was, I theorize, due to the shade of the ink. We used a dark blue, which probably had a hint of purple or red so as to darken it. Altogether, my revised theory would be as follows;
    "Non primary colors will be made up of more pigments, also darker primary colors will be made up of that pigment and a complementary shade."