Understanding Chromatography and Ink Composition

What is chromatography primarily used for?

• To mix different colors

• To separate and analyze mixtures

• To enhance the brightness of colors

• To create new chemical compounds

Which of the following items is NOT needed for the chromatography experiment described?

• A jam jar

• Coffee filter paper

• A pencil

• A ruler

What is the purpose of drawing a pencil line on the filter paper in the chromatography experiment?

• To measure the length of the paper

• To indicate where to cut the paper

• To mark the starting point for the ink

• To ensure the paper is straight

What colors were observed in the black ink after the chromatography experiment?

• Red and green

• Purple, light blue, and dark blue

• Yellow, brown, and blue

• Only black

What does the presence of multiple colors in the separated ink suggest?

• The ink is of poor quality

• The ink is old and faded

• The ink is a mixture of different pigments

• The ink was not applied correctly