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, kerosene, heavy fuel oil and liquified petroleum gases (LPG)

Question 3

what do the petrochemical industry use crude oil for?

Answer 3

for making many useful materials by using fractions from crude oil. they making lubricants, solvents, polymers and detergents

Question 4

what happens during fractional distillation?

Answer 4

the molecules in crude oil are heated to evaporate them

Question 5

smaller hydrocarbons have _____ boiling points and ______ ______ in the fractional distillation column before _______

Answer 5

lower, rise higher, condensing

Question 6

larger hydrocarbons have _____ boiling points and __________ ________ _____ in the column where the _________ is hotter

Answer 6

higher, condense lower down, temperature