Organic Chemistry Chapter 3

Question 1

Alkanes are

Answer 1

molecules with multiple carbon carbon single bonds/ saturated hydrocarbons

Question 2

Saturated Hydrocarbons are

Answer 2

molecules with C-C and C-H single bonds

Question 3

What does it mean if a compound is Aliphatic Alkane

Answer 3

it is a fatty compound

Question 4

Straight Chain Alkanes are

Answer 4

carbons in an alkane connected via single row

Question 5

Branched Chain alkanes are

Answer 5

carbons in an alkans whos chain is branched

Question 6

Isomers are

Answer 6

compounds that have same number and kind of atoms but differ in the way the atoms are arranged

Question 7

Constitutional Isomers are

Answer 7

isomers with atoms who are all connected differently so it . has the same molecular formula but different functional groups, properties etc

Question 8

Alkyl Groups

Answer 8

partial structure that is remaining after removal of an hydrogen atom from an alkane. Not stable but part of a larger compound. Removal of hydrogen from an alkane results in name to go from ane- yl. (methane to methyl)

Question 9

Straight Chain Alkyl Groups are

Answer 9

alkyl groups whos hydrogen is removed from an end carbon

Question 10

Branched Chain Alkyl Groups are

Answer 10

generated from removing a hydrogen from an internal carbon atom

Question 11

What is the trend of Alkane boiling and melting points and why

Answer 11

Increases with molecular weight (more carbons), happens because of presence of weak dispersion forces between molecules

Question 12

Stereochemistry

Answer 12

branch of chemistry defined with 3 dimensional aspects of molecules

Question 13

Conformations

Answer 13

Different arrangement of atoms that result from bond rotation

Question 14

Conformers

Answer 14

molecules that have different arrangements called conformational isomers or Conformers

Question 15

what are the 2 ways of representing conformational isomers?

Answer 15

1. Sawhorse representaiton (views bonds from an oblique angle and indicates special orientation)
2. Newman Projection

Question 16

What is a Newman projection

Answer 16

carbon-carbon directly end on and represent 2 carbon atoms in a circle

Question 17

What is the general pattern of a Newman Projection

Answer 17

Bonds attached to front carbon are repped by lines to center of circle and bonds
Bonds attatched to rear carbon are repped by lines to edge of circle