organic chemistry

Question 1

what is crude oil made of?

Answer 1

different lengths of hydrogen

Question 2

what are the 4 alkanes?

Answer 2

methane, ethane, propane, brotane

Question 3

describe how crude oil is made

Answer 3

from the remains of dead plankton and other animals and plants buried in sand and mud over long periods of time.

Question 4

what are the uses of crude oil?

Answer 4

fuel for transport and other compounds such as polymers, lubricants, solvents and detergents.

Question 5

complete this combustion equation. hydrocarbon+oxygen=

Answer 5

carbon dioxide + water

Question 6

describe the process of fractional distillation.

Answer 6

crude oil is a mixture of hydrocarbons that are heated to form a gas that all have different boiling points so separate out at different temps

Question 7

what boiling point do long chain hydrocarbons have?

Answer 7

high boiling points.

Question 8

what boiling point do short chain molecules have?

Answer 8

low boiling points.

Question 9

what is bromine water a test for?

Answer 9

alkene

Question 10

what colour does bromine water go?

Answer 10

colourless

Question 11

how does the length of hydrocarbon affect the viscosity?

Answer 11

more viscous

Question 12

what is cracking?

Answer 12

the breaking down of large chain hydrocarbons into shorter chains.

Question 13

what does cracking produce?

Answer 13

alkenes that have a double bond.

Question 14

what is the formula for alkenes?

Answer 14

CnH2n

Question 15

what are the two methods of cracking?

Answer 15

steam

catalytic

Question 16

describe how cracking is done with steam.

Answer 16

heated into vapour, mixed with steam, heated at very high temp.

Question 17

describe how cracking is done with catalytic.

Answer 17

heated into a gas, passed over aluminium oxide catalyst, molecules split.