Unit 2- Hydrocarbons

Question 0

Name a subset of hydrocarbons

Answer 0

Alkanes

Question 1

What is a homologous series?

Answer 1

A set of compounds with the same general formula and similar chemical properties

Question 2

How can you identify an alkane by looking at its name?

Answer 2

The -ane ending

Question 3

What is the general formula for alkanes?

Answer 3

CnH2n+2

Question 4

How many carbons are in meth-

Answer 4

1

Question 5

How many carbons are in prop-

Answer 5

3

Question 6

How many carbons are in pent-

Answer 6

5

Question 7

How many carbons are in hept-

Answer 7

7

Question 8

How many carbons are in non-

Answer 8

9

Question 9

How many carbons are in dec-

Answer 9

10

Question 10

How many carbons are in eth-

Answer 10

2

Question 11

How many carbons are in oct-

Answer 11

8

Question 12

How many carbons are in but-

Answer 12

4

Question 13

How many carbons are in hex-

Answer 13

6

Question 14

How can straight chain alkanes be named?

Answer 14

From their molecular formula, shortened and full structural formulae

Question 15

What is the molecular formula for methane?

Answer 15

CH4

Question 16

What is the shortened formula for pentane?

Answer 16

CH3, CH2, CH2, CH2, CH3

Question 17

What I the molecular formula for propane?

Answer 17

C3H8

Question 18

What is the shortened formula for propane?

Answer 18

CH3, CH2, CH3

Question 19

What is the molecular formula for pentane?

Answer 19

C5H12

Question 20

What is the shortened structural formula for methane?

Answer 20

CH4

Question 21

What is the molecular formula for ethane?

Answer 21

C2H6

Question 22

What is the shortened structural formula for butane?

Answer 22

CH3, CH2, CH2, CH3

Question 23

What is the molecular formula for butane?

Answer 23

C4H10

Question 24

What is the shortened structural formula for ethane?

Answer 24

CH3, CH3

Question 25

How are the branches of branched chain alkanes named?

Answer 25

They are named after the corresponding alkanes with the '-ane' ending changed to '-yl'

Question 26

Give an example of a branch name

Answer 26

``` Methly Ethyl Propyl Butly Pently ```

Question 27

How do you name a branched chain alkane?

Answer 27

- Select the longest, continuous chain of carbon atoms an name it after the appropriate alkane - number the carbon atoms from the end of the chain nearer the branch - name the branches and indicate the position of the branches on the chain

Question 28

What are alkenes?

Answer 28

A subset of compounds called hydrocarbons

Question 29

What makes an alkene different from an alkane?

Answer 29

It has a double bond

Question 30

What is the alkene general formula?

Answer 30

CnH2n

Question 31

What are cycloalkanes?

Answer 31

A subset of compounds called hydrocarbons

Question 32

What is the cycloalkanes general formula?

Answer 32

CnH2n