org chem

Question 1

define organic chemistry

Answer 1

Study of carbon containing compounds

Question 2

most compounds organic or inorganic

Answer 2

inorganic

Question 3

What are alkanes?

Answer 3

chains of carbon atoms connected by single bonds

Question 4

What is the general formula for alkanes?

Answer 4

CnH2n+2

Question 5

What type of hydrocarbons are alkanes classified as?

Answer 5

Saturated hydrocarbons

Question 6

What are the physical states of alkanes at room temperature?

Answer 6

gases, liquids, or solids.

Question 7

What state are unbranched alkanes in?

Answer 7

Gases.

Question 8

What state are alkanes from 4-16?

Answer 8

Liquids.

Question 9

What state are alkanes larger than hexadecane?

Answer 9

Solids.

Question 10

What are isomers?

Answer 10

molecules can share the same molecular formula but differ in their structural formula.

Question 11

True or False: Isomers have the same chemical properties.

Answer 11

False.

Question 12

what are alkenes used for

Answer 12

starting material in polymer molecules eg. antifreeze

Question 13

are alkenes reactive

Answer 13

very reactive

Question 14

are alkenes and alkynes saturated or unsaturated

Answer 14

unsaturated

Question 15

are aromatics saturated or unsaturated

Answer 15

unsaturated

Question 16

how do aromatics get its name

Answer 16

first ones discovered had pleasant odors

Question 17

where is benzene naturally occurring

Answer 17

coal tar

Question 18

friedrich august keluké thought of the ring structured benzene by..

Answer 18

dreaming of snakes grabbing its own tail

Question 19

what is resonance, is the resonance structure accurate

Answer 19

benzenes structure moving back and forth between the two structures
- not accurate

Question 20

properties of alkanes, alkenes, and alkynes

Answer 20

non polar, doesnt dissolve in water
- carbons increase, boiling point increases

Question 21

uses of alkanes

Answer 21

fuels oils candles

Question 22

why are alkynes more reactive than alkenes?

Answer 22

instability of the triple bond

Question 23

two properties smaller alcohols and carboxylic acids have

Answer 23

boiling and melting point greater than alkanes with the same number

Question 24

properties of esters

Answer 24

• polar
• doesnt form hydrogen bonds
• boiling and melting point higher than hydrocarbons
• soluble in water

Question 25

why is the bp of alcohols and acids higher than alipathic hydrocarbons with the same number of carbon atoms

Answer 25

the OH group promotes hydrogen bonding in addition to greater molecular mass