chromatography

chromatography

6.16

which kind of mixture the chromatography can separate ?

Multiple Choice

What is chromatography?

• A way to see pretty colors

• A laboratory technique used to separate a mixture.

• A form of distillation

Multiple Choice

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

Multiple Choice

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.

how does it work?

watch

https://youtu.be/PvHvx7k7UPU

why they separate ?

Multiple Choice

• Blue loves water.

• Yellow loves water.

• Green loves water.

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

• color

• fat

• water

Multiple Choice

What is the correct image of paper chromatography???

Multiple Choice

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

• density
• solubility
• gravity
• boiling point

Multiple Choice

A pure substance shows ------------------ spot on chromat gram

• 0
• 1
• 2
• 3

Multiple Choice

On the chromatogram given -------------- is mixture.

• red
• orange
• green
• black

Multiple Choice

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

• distillation

• filtration

• chromatography

• sedimentation

how it is useful

example

Multiple Choice

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.

Scientific investigation ?

observation

ask Question

develop empirical Question ?

Investigation:

-conduct experiment

-secondary resource

conclusion (developing explanation )