What is fractional distillation?

• a process used to separate crude oil

• a process used to burn up fuels

• a way to make different products

• how oil is extracted from the ground

Which of these substances is not a hydrocarbon?

• methane

• ethane

• propane

• butane

• ammonia

Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture

• melting point

• boiling point

• freezing point

• chemical reactivity

A fraction of crude oil is made up of:

• Hydrocarbons of similar chain lengths

• Numbers

• Large hydrocarbons

• Alkenes only

Crude oil is made up of:

• Ethane

• Butane

• A mixture of different hydrocarbons

• Extremely large hydrocarbons which are broken up once extracted

What process happens at each level in the fractionating column?

• Evaporation

• Condensation

• Combustion

What process happens as the crude oil enters the fractionating column?

• Evaporation

• Condensation

• Combustion

Where do short chain hydrocarbons collect?

• At the top

• In the middle

• At the bottom

Where do long chain hydrocarbons collect?

• At the top

• In the middle

• At the bottom

Shorter hydrocarbons have:

• Higher boiling points

• Lower boiling points