Plant Chromatography

Which pigment is not seen in the leaves of trees in the fall in a temperate deciduous biome?

• anthocyanin

• carotene

• xanthophyll

• chlorophyll

The pattern of colored pigments on a strip of paper is called?

• chromatography

• chromatogram

• running solvent

• solvent front

The process that holds the pigments onto the paper's surface is called?

• cohesion

• capillarity

• absorption

• solvenization

The process that draws the pigment up the paper against gravity is called?

• solventization

• chromatification

• capillarity

• osmolality

Solvents (alcohol, acetone, and ethers) are considered volatile liquids. Which of the following safety measures are needed when working with volatile chemicals? (mark all that apply)

• Wear goggles.

• Work in a confined space.

• Use only a controlled flame around them.

• Avoid inhaling fumes

• Place lids on chemical containers when not in use.

When placing the pigment drop on the chromatography paper - be sure to do which of the following? (mark all that apply)

• Place the pigment on the tip of the paper.

• Apply the pigment with a pipet.

• Wait until the drop dries before applying more pigment.

• Be sure the pigment is submerged in the solvent when you start.

Which of the following statements are true regarding a mortar and pestle? (mark all that apply)

• A mortar is a rounded grinding club

• A mortar is a durable bowl.

• A pestle is a rounded grinding club

• A pestle is a durable bowl.

When sizing the chromatography paper to the lid and jar - what should the paper not touch?

• The top of the lid.

• The solvent.

• The sides of the jar.

• The bottom of the jar.

In order to form a pigment extract you will need all of the following except_____.

• mortar

• pestle

• leaf fragments

• solvent

• tape

When is the chromatogram ready to be removed from the jar?

• All the pigments have dissolved.

• The solvent front stops moving.

• The three different colors appear.

• The solvent reaches the pigment dot.