WG 1-2 Part 4 Slides & Review (EDIT)

Multiple Choice

The particles in a mixture _ chemically chemically connected or bonded to one another. This is why they can be easily separated.

• are

• are not

Multiple Choice

When trying to decide how to separate a mixture, you should first __.

• identify similarities in the properties of the components

• identify differences in the properties of the components

• attempt to dissolve the mixture in water

• heat the mixture

Multiple Choice

The image on the previous slide showed you how a magnetic roller is used to separate the nonmagnetic particles from the magnetic particles in a mixture. The particles that fly off the belt and land in a container in front of the belt are:

• magnetic and attracted to the magnet in the roller

• nonmagnetic and attracted to the magnet in the roller

• magnetic and NOT attracted to the magnet in the roller

• nonmagnetic and NOT attracted to the magnet in the roller

Multiple Choice

The particles that stick to the belt longer and fall into the container under the belt are:

• magnetic and attracted to the magnet in the roller

• nonmagnetic and attracted to the magnet in the roller

• magnetic and NOT attracted to the magnet in the roller

• nonmagnetic and NOT attracted to the magnet in the roller

Multiple Choice

Chromatography separates mixtures because some components:

• are more attracted to a solvent than others

• have a higher boiling point than others

• are larger than others

• are magnetic and others are not

Multiple Choice

The yellow pigment traveled the furthest up the chromatography paper because it:

• has the strongest attraction to the solvent

• has the weakest attraction to the solvent

Multiple Choice

A centrifuge can be used to separate a mixture in which one component __.

• more attracted to a solvent than others

• has a higher boiling point than others

• is more dense than others

• is magnetic and others are not

Multiple Choice

Particles that are MORE dense will move:

• to the top of the sample as it spins

• to the bottom of the sample as it spins

Multiple Choice

Which component of blood is most dense?

• Platelet Poor Plasma (yellow)

• Platelet Rich Plasma (orange)

• Red Blood Cells (red)

Multiple Choice

Extremely small particles will:

• remain on top of the filter paper

• pass through the pores of filter paper

Multiple Choice

Particles that are INSOLUBLE in the solvent __

• will NOT pass through the pores of the filter paper

• pass through the pores of filter paper

Multiple Choice

What should you do to make filter paper stay in the funnel?

• tape it down

• hold it while the mixture is filtered

• wet the filter paper

• put some solid particles in the filter paper

Multiple Choice

Recrystallization can be used to separate mixtures if one component:

• is more attracted to a solvent than others

• has a different boiling point than the others

• is larger than others

• is more dense than the other

Multiple Choice

The solid crystals appear as the

• solute dissolves in the solvent

• solvent evaporates

• solute evaporates

• solute melts

Multiple Choice

Rock candy can be made as water evaporates from a sugar solution. You should evaporate the water __ if you want really large crystals!

• Slowly

• Quickly

Multiple Choice

Distillation can be used to separate mixtures if one component:

• is more attracted to a solvent than others

• has a different boiling point than the others

• is larger than others

• is more dense than the other

Multiple Choice

The component with the __ boiling point will boil and separate from the mixture first.

• lowest

• highest

Multiple Choice

The cold (blue) water that runs through the outer portion of the condenser tube will:

• steal energy from the gas particles moving through the inner tube & help it condense

• add energy from the gas particles moving through the inner tube & help it boil

Multiple Choice

Distillation can be used to separate crude oil into substances such as:

• methane

• gasoline

• kerosene

• diesel oil

• all of the above