Crude Oil

Question 1

crude oil

Answer 1

organic different hydrocarbons

Question 2

uses of crude oil

Answer 2

fuel, warming buildings, generating electricity

Question 3

formation of crude oil

Answer 3

plankton buried , over millions of years layers of rock laid over, creates high pressure and temperature

Question 4

alkane

Answer 4

saturated hydrocarbons in crude oil, CnH(2n + 2)

Question 5

saturated

Answer 5

each single covalent carbon bond contains the maximum amount of hydrogen atoms

Question 6

properties of hydrocarbons depend on . . .

Answer 6

chain length

Question 7

properties of short chain hydrocarbons

Answer 7

low boiling points, volatile, flammable = good fuel source

Question 8

properties of long chain hydrocarbons

Answer 8

high boiling points, viscosity, non volatile, low flammability = low uses

Question 9

fractional distillation

Answer 9

separation of crude oil into hydrocarbons via fractions

Question 10

fraction

Answer 10

mixture of different hydrocarbon molecules condensing at their boiling points

Question 11

fractional distillation process

Answer 11

oil vaporised, enters tower, hydrocarbons condense at their boiling points, collected as liquids at different levels

Question 12

at the top of the tower. . .

Answer 12

short chain hydrocarbon molecules condense, cooler

Question 13

at the bottom of the tower . . .

Answer 13

long chain hydrocarbon molecules condense, hotter