fractional distillation

Question 1

what is fractional distillation?

Answer 1

the method used to separate the molecules in crude oil into fractions, each of which contains molecules with a similar number of carbon atoms

Question 2

what fuels are produced from crude oil?

Answer 2

petrol, diesel oil, kerosene, heavy fuel oil and liquefied petroleum gases (LPG)

Question 3

many useful _________ are produced using the _________ from crude oil by the ____________ industry such as solvents, __________, polymers and detergents.

Answer 3

many useful materials are produced using the fractions from crude oil by the petrochemical industry such as solvents, lubricants, polymers and detergents.

Question 4

in fractional distillation why are the molecules in crude oil heated?

Answer 4

to evaporate them

Question 5

_______ hydrocarbons have a _____ boiling points and rise ______ in the fractional distillation column ______ condensing

Answer 5

smaller hydrocarbons have a lower boiling points and rise higher in the fractional distillation column before condensing

Question 6

______ molecules have ______ boiling points and condense _____ down the column where the temperature is ______

Answer 6

larger molecules have higher boiling points and condense lower down the column where the temperature is hotter