Fractional distillation of crude oil

What process is used to separate crude oil in hydrocarbons with different chain lengths?

• distillation

• fractional distillation

• cracking

• polymerisation

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

• melting point

• boiling point

• freezing point

• chemical reactivity

Molecules collected at the bottom of the fractionating column tend to be...

• more viscous, less flammable and less volatile

• less viscous, more flammable and more volatile

• more viscous, more flammable and less volatile

• less viscous, less flammable and more volatile

Molecules collected at the top of the fractionating column tend to be...

• more viscous, less flammable and less volatile

• less viscous, more flammable and more volatile

• more viscous, more flammable and less volatile

• less viscous, less flammable and more volatile

What is the definition of a hydrocarbon?

• contains hydrogen and carbon atoms

• a mixture of hydrogen and carbon atoms

• a compound containing only hydrogen and carbon atoms

• a carbon atom full of water

Which key term is described as the attractive force BETWEEN molecules?

• a) Inner molecular forces
• b) Outer molecular forces
• c) Intermolecular forces
• d) Intramolecular forces

Which of the following is not a use of the products from the fractional distillation of crude oil?

• a) Iron ore

• b) Petrol

• c) road surfacing

• d) camping gas

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

Tags

NGSS.HS-PS3-4