Hydrocarbons

Question 1

is a hydrocarbon that has one or more triple covalent bonds between carbon atoms -

Answer 1

Alkyne

Question 2

• unsaturated hydrocarbon

- is the starting material for the synthesis of the plastic polyethylene

Answer 2

Ethene

Question 3

A hydrocarbon that has one or more double covalent bonds between carbon atoms

Answer 3

Alkene

Question 4

Torches used in welding burn ……, which is commonly called acetylene

Answer 4

Ethyne

Question 5

Alkenes and alkynes are more reactive than alkanes because double and triple bonds have greater ….. than single bonds have

Answer 5

Electron density

Question 6

1 carbon -

Answer 6

Methane

Question 7

2 carbon

Answer 7

Ethane

Question 8

3 carbon

Answer 8

Propane

Question 9

4 carbon

Answer 9

Butane

Question 10

5 carbon

Answer 10

Pentane

Question 11

6 carbon

Answer 11

Hexane

Question 12

7 carbon

Answer 12

Heptane

Question 13

8 carbon

Answer 13

Octane

Question 14

9 carbon

Answer 14

Nonane

Question 15

10 carbon

Answer 15

Decane

Question 16

A series of hydrocarbons with the same general formulas

Answer 16

Homologous series

Question 17

General formula for an Alkane -

Answer 17

Cn H2 n + 2

Question 18

Formula for a cycloalkane -

Answer 18

CnH2n

Question 19

Formula for a alkene -

Answer 19

CnH2n

Question 20

Formula for an alkyne-

Answer 20

CnH2n

Question 21

Alkenes have …. bonds -

Answer 21

Double

Question 22

Alkynes have …. bonds -

Answer 22

Triple

Question 23

General formula for cyclohexane -

Answer 23

C6 H12

Question 24

Formula for an Alkane w/ 15 Carbon atoms -

Answer 24

C15 H32

Question 25

Formula for nonene-

Answer 25

C9 H18

Question 26

General properties of Alkanes -

Answer 26

• non polar bonds
• insoluble in water
• not reactive to chemicals

Question 27

molecules consisting of only hydrogen and carbon atoms

Answer 27

Hydrocarbons

Question 28

Difference between saturated and unsaturated hydrocarbons -

Answer 28

Saturated - single bonds & less reactive

Unsaturated - double/triple bonds & more reactive

Question 29

A liquid mixture of hydrocarbons that is present in certain rock and can be extracted and retained to produce fuels -

Answer 29

Petroleum

Question 30

How is petroleum formed -

Answer 30

Remains of ancient marine organisms

Question 31

Where is petroleum found -

Answer 31

Bottom of the ocean

Question 32

A process of separating a mixture of chemical compounds -

Answer 32

Fractional Distillation

Question 33

What is fractional distillation used for in the petroleum industry -

Answer 33

• Each fraction of the mixture can be kept apart from the other chemicals
• heating the mixture so that each fraction evaporates then condenses in its own compartment
• crude oil is seperated by this

Question 34

The process where organic molecules are broken down into simpler molecules -

Answer 34

Cracking

Question 35

What is cracking used for -

Answer 35

The smaller molecules are used for gasoline

Question 36

Different types of cracking -

Answer 36

Thermal

Catalytic

Question 37

This type of cracking is where complex organic molecules are broken down into simpler molecules

Answer 37

Thermal cracking

Question 38

This type of cracking is when catalysts are used to promote molecular breakdown at lower temp. in an operation

Answer 38

Catalytic

Question 39

5 products produced from petroleum-

Answer 39

Fuels
Plastics
Paints
Glues
Pharmaceuticals