Chapter 11: Organic Compounds

Question 1

Are organic compounds soluble in water?

Answer 1

No

Question 2

Organic compounds have high melting and boiling points. True or false?

Answer 2

False, low boiling and melting points

Question 3

What type of bonds are organic compounds?

Answer 3

Covalent

Question 4

Are organic compounds flammable?

Answer 4

Yes

Question 5

If organic compounds are not soluble in water, this makes them _____

Answer 5

Nonpolar

Question 6

Which burns easily in air, inorganic or organic compounds?

Answer 6

Organic

Question 7

_____ are organic compounds that contain ONLY _____ and hydrogen.

Answer 7

Hydrocarbons are organic compounds that contain only carbon and hydrogen.

Question 8

In organic molecules, every C must have how many bonds? Why?

Answer 8

Four bonds because on the periodic table carbon is in group 14 which indicates 4 valence electrons

Question 9

_______ hydrocarbons contain only single bonds

Answer 9

Saturated. (“c–c” versus “c=c”)

Question 10

Methane has a _____ shape and the molecular formula is:

Answer 10

Tetrahedral; CH4

Question 11

Ethane’s condensed structural formula is ___–___, and each tetrahedral carbon forms how many covalent bonds?

Answer 11

Ch3–Ch3. Three.

Question 12

Formula for butane?

Answer 12

C4H10

Question 13

____ are hydrocarbons that contain only C–C and C–H bonds

Answer 13

Alkanes

Question 14

Alkanes are compounds that end in ____

Answer 14

ane

Question 15

Number of carbon atoms for: Methane

Answer 15

1

Question 16

Number of carbon atoms for: Ethane

Answer 16

2

Question 17

Number of carbon atoms for: Propane

Answer 17

3

Question 18

Number of carbon atoms for: Butane

Answer 18

4

Question 19

Number of carbon atoms for: Pentane

Answer 19

5

Question 20

Number of carbon atoms for: Hexane

Answer 20

6

Question 21

Number of carbon atoms for: Heptane

Answer 21

7

Question 22

Number of carbon atoms for: Octane

Answer 22

8

Question 23

Number of carbon atoms for: Nonane

Answer 23

9

Question 24

Number of carbon atoms for: Decane

Answer 24

10

Question 25

Ch3—CH3 is:

Answer 25

Ethane

Question 26

CH3–CH2–CH3 is:

Answer 26

Propane

Question 27

CH3–CH2–CH2–CH3 is:

Answer 27

Butane

Question 28

CH3–CH2–CH2–CH2–CH3 is:

Answer 28

Pentane

Question 29

CH3–CH2–CH2–CH2–CH2–CH3 is:

Answer 29

Hexane

Question 30

CH3–CH2–CH2–CH2–CH2–CH2–CH3 is

Answer 30

Heptane

Question 31

CH3–CH2–CH2–CH2–CH2–CH2–CH2–CH3 is

Answer 31

Octane

Question 32

CH3–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH3 is

Answer 32

Nonane

Question 33

CH3–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH3 is

Answer 33

Decane

Question 34

An organic compound with 5 carbon atoms is a ____ alkane

Answer 34

Pentane

Question 35

Molecular formula for Methane:

Answer 35

CH4

Question 36

Molecular formula for Ethane:

Answer 36

C2H6

Question 37

Molecular formula for Propane:

Answer 37

C3H8

Question 38

Molecular formula for Butane:

Answer 38

C4H10

Question 39

Molecular formula for Pentane:

Answer 39

C5H12

Question 40

Molecular formula for Hexane:

Answer 40

C6H14

Question 41

Molecular formula for Heptane:

Answer 41

C7H16

Question 42

Molecular formula for Octane:

Answer 42

C8H18

Question 43

Molecular formula for Nonane:

Answer 43

C9H20

Question 44

Molecular formula for Decane:

Answer 44

C10H22

Question 45

Cycloalkanes are:

Answer 45

Cyclic alkanes

Question 46

Cycloalkanes have ___ fewer hydrogen atoms than the open chain form

Answer 46

two (i.e propane is C3H8, cyclopropane is C3H6)

Question 47

Cyclopropane’s line formula is a:

Answer 47

Triangle because C3

Question 48

Cyclobutane’s line formula is a:

Answer 48

square (because C4, four corners)

Question 49

Cyclopentane’s line formula is a:

Answer 49

pentagon (because C5, 5 points)

Question 50

Cyclohexane’s line formula is a:

Answer 50

Hexagon (because C6, six points)

Question 51

When an alkane has four or more carbon atoms, the atoms can be arranged so that a side group called a “branch” or _____ is attached to a carbon chain

Answer 51

Substituent

Question 52

Explain Isomers

Answer 52

Isomers have the same molecular formula but the atoms are arranged differently.

Question 53

_____ have the same number of atoms bonded in a different order

Answer 53

isomers

Question 54

_____ groups are groups of carbon atoms attached to carbon chains

Answer 54

Alkyl

Question 55

____ substituents are ____ atoms attached to the carbon chain. The ones used on the test will be Fluoro, Chloro, Bromo, and Iodo

Answer 55

Halo; halogen. Expect Bromo and Chloro on the exam, definitely.

Question 56

Formula and substituent of CH3–

Answer 56

Meth-yl

Question 57

Formula and substituent of CH3–Ch2–

Answer 57

Eth-yl

Question 58

Formula and substituent of Ch3–Ch2–Ch2–

Answer 58

Prop-yl

Question 59

Alkanes with 9-17 carbons are _____ with higher boiling points and are found in motor oils

Answer 59

Liquids

Question 60

Alkanes with 18 or more carbon atoms, known as _____, are waxy solids at room temperature.

Answer 60

paraffins

Question 61

Do Alkanes with strong C—C bonds release energy when the bonds are broken during combustion reactions?

Answer 61

Yes

Question 62

Alkanes with strong C—C bonds react with oxygen gas to make CH2 and water in combustion reactions. True or False?

Answer 62

False, C—C bonds react with O2 gas and CO2 in combustion reactions, not CH2.