Midterms: Alkanes

Question 1

What are the different kinds of structures for organic molecules?

Answer 1

Molecular formula
Condensed Structure
Lewis Structure
Skeletal Structure
Ball and Stick Model
Kekule (Straight Line)
Condensed Formulas
Bond line Formulas

Question 2

What is the most common form of Vitamin A?

Answer 2

Retinol

Question 3

These structures are represented not by electron dots but by line.

Answer 3

Kekule Structures

Question 4

Made up of elemental symbols. They are written in single lines to save space and make it more convenient and faster to write out.

Answer 4

Condensed Formulas

Question 5

Used to write carbon and hydrogen atoms more efficiently by replacing the letter c with lines.

Answer 5

Bond-Line (Zig-Zag) Formulas

Question 6

A widely used way of showing the 3D structure of molecules.

Answer 6

Dashed-Wedged Line Structure

Question 7

Hydrocarbons are compounds that contain only what?

Answer 7

Carbon and Hydrogen

Question 8

Two main classes of hydrocarbons?

Answer 8

Aliphatic Hydrocarbons and Aromatic Hydrocarbons.

Question 9

When did the classification date back to?

Answer 9

19th Century

Question 10

What were the two sources?

Answer 10

Fats and Oils

Question 11

Where did the word aliphatic derive from?

Answer 11

from the word aleiphar (fat)

Question 12

Three major groups of Aliphatic Hydrocarbons?

Answer 12

Alkanes, Alkenes, Alkynes

Question 13

Single Bond

Answer 13

Alkanes

Question 14

Double Bond

Answer 14

Alkenes

Question 15

Triple Bond

Answer 15

Alkynes

Question 16

Another name for Aromatic Hydrocarbons?

Answer 16

Arenes

Question 17

The most important aromatic hydrocarbon?

Answer 17

Benzene

Question 18

Hydrocarbons are further categorized into two, what are they?

Answer 18

Saturated Hydrocarbons and Unsaturated Hydrocarbons

Question 19

What are under saturated hydrocarbons?

Answer 19

Alkanes and Cycloalkanes

Question 20

What are under unsaturated hydrocarbons?

Answer 20

Alkenes, Alkynes, Aromatic Hydrocarbons

Question 21

What is the general formula of alkanes?

Answer 21

CnH2n+2

Question 22

These are alkanes that contain a ring of three or more carbons.

Answer 22

Cycloalkanes

Question 23

What is IUPAC?

Answer 23

International Union of Pure and Applied Chemistry

Question 24

Is an atom or group of atoms attached to a chain or ring of carbon atoms?

Answer 24

Substituent

Question 25

Is the group of atoms that would be obtained by removing a hydfrogen atom from an alkane?

Answer 25

Alkyl Group

Question 26

Two common alkyl groups?

Answer 26

1 and two carbon alkyl group. Methyl and Ethyl group

Question 27

Alkanes and cycloalkanes are insoluble in ____?

Answer 27

Water

Question 28

How many degC increases in boiling point for every carbon atom added to the chain?

Answer 28

increase30

Question 29

Another name for Alkyl Halides?

Answer 29

Halogenated Alkanes

Question 30

Same Molecular formula but different structure?

Answer 30

Isomers