Forensic: Chromatography

Ink can be separated by a method of -----------------------------------------------

• distillation

• filtration

• chromatography

• sedimentation

chromatography separates the mixture of dyes on the basis of their ----------------------------

• density
• solubility
• gravity
• boiling point

What is chromatography?

• A way to see pretty colors

• A laboratory technique used to separate a mixture.

• A form of distillation

Two or more substances that are mixed together but not chemically combined create a...

• solvent

• compound

• mixture

What molecules move up the paper to carry the different colors of ink?

• color

• fat

• water

Which of the following mixture/s is/are separated by chromatography?

• Pigments from natural colours

• Colours in a dye

• Colours of flowers extracts

• All the above

Which of the following is correct about chromatography?

• It separates those solutes that dissolve in the same solvent.

• It separates those solutes that dissolve in different solvents.

• It separates a solute that dissolves in a solid solvent.

• It separates gaseous solutes from liquid solvents.

Why is Chromatography useful?

• It can be used as medicine.
• It can be used for finding clues at a crime scene
• It can be used to make bombs.
• It can reduce the lack of food and water.

In paper chromatography, the LEAST soluble solute ____.

• does not move from the start point

• stays closest to the start point

• travels furthest away from the start point

• can be found in the middle of the chromatogram

In chromatography, if a solute does not separate and remains on the start line ....

• the solute is insoluble in the solvent
• the solute is soluble in the solvent
• the solvent is insoluble in the solute
• the solvent is soluble in the solute