S5 CHEM: CHAPTER 11 REVIEWER

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

Name the following hydrocarbon

• butane

• hexane

• heptane

• hexene

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

• Inner molecular forces

• Outer molecular forces

• Intermolecular forces

• Intramolecular forces

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