Chromatography

Two or more substances that are mixed together but not chemically combined is a ___

• compound
• mixture
• keratin
• chromatography

Two or more substances that are chemically combined is a ___

• compound
• mixture
• solvent
• solute

Tags

NGSS.MS-PS1-1

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

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.

Why must the base line be drawn in pencil and not pen?

• a) Pencil is good at keeping substances in place.
• b) Pencil is soluble in water
• c) Pencil is insoluble in water
• d) Pencil is not coloured

Tags

NGSS.HS-PS2-6

 If a substance is not attracted to the water what happens to the 'dot'?

• a) Dot moves to the top of the paper
• b) Dot does not move at all
• c) Dot moves to the left or right
• d) Dot moves down to the bottom of the paper

In paper chromatography, the MOST 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 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