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

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

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

• red

• orange

• green

• black

A pure substance shows ------------------ spot on chromatogram

• 0

• 1

• 2

• 3

_________________ utilizes a stationary and a mobile phase to separate mixtures based on their affinity for each phase.

• filtration
• chromatography
• distillation
• osmosis

The mobile phase in paper chromatography is typically a

• plasma
• solid
• gas
• liquid

The retention factor is used

• to zero the chromatography scale
• to identify unknown compounds in a sample
• to retain solvent
• as a starting tool for chromatography

The R_f value for the blue component is

• 0.3

• 0.7

• 10

• 3