Crude Oil- Unit 7a

Question 1

Define hydrocarbon

Answer 1

A compound

Made of carbon and hydrogen only

Question 2

Define Alkane

Answer 2

Hydrocarbon with only single bonds

Saturated

Question 3

Define Alkene

Answer 3

Hydrocarbon with C=C double bonds

Unsaturated

Question 4

Define Crude Oil

Answer 4

Mixture of different lengethed hydrocarbons

Question 5

Properties of long hydrocarbons

Answer 5

High MP and BP

Thick (viscous)

Liquid or solid

Question 6

Properties of short hydrocarbons

Answer 6

Low MP and BP

Runny (low viscosity)

Gases

Question 7

Name first five alkanes

Answer 7

Methane
Ethane
Propane
Butane
Pentane

Question 8

Name first 4 alkenes

Answer 8

Ethene
Propene
Butene
Pentene

Question 9

Define Fractional distillation

Answer 9

Separating different length hydrocarbons

Into fractions

Question 10

Define cracking

Answer 10

Splitting up long chains into small chained hydrocarbons

Makes an alkene and alkane

Question 11

Define polymer

Answer 11

Adding small monomers together

Long chains from short chains

Question 12

What are the conditions for cracking?

Answer 12

Heat

Over porous clay

Question 13

Define hydrogenation

Answer 13

Adding hydrogen to a double bond

makes a alkene into a alkane

Question 14

Conditions for Hydrogenation

Answer 14

60 degrees
Hydrogen
Nickel Catalyst

Question 15

Steps of fractional distillation

Answer 15

Heating
Evaporation
Separation
Condensation
Fractions

Question 16

General formula for Alkanes

Answer 16

Cn H2n+2

This means double the carbons and add 2

Question 17

General formula for Alkene

Answer 17

Cn H2n

This means double the carbon to find the hydrogens

Question 18

What does saturated mean?

Answer 18

Only contains single bonds

Question 19

What does unsaturated mean?

Answer 19

Contains double bonds

C=C

Question 20

What does carbon neutral mean?

Answer 20

Carbon given out

Same as carbon taken in

No net carbon is added to the atmosphere