1.2: Alkenes and Alkynes

Question 1

Alkene:

Answer 1

A hydrocarbon that contains at least one double bond; general formula CnH2n

Question 2

Alkyne:

Answer 2

hydrocarbon that contains at least one triple bond; general formula CnH2n-2

Question 3

Saturated: Hydrocarbons that

Answer 3

contain only single bonds;

Question 4

Unsaturated: Contains at least

Answer 4

one double or triple bond

Question 5

Stereoisomers:

Answer 5

molecules that have the same chemical formula and structural backbone, but different
arrangement in space.

(only occurs in molecules with
DOUBLE BONDS, because the atoms about a double bond
CANNOT ROTATE)

Question 6

Cis & Trans describe

Answer 6

the positions of the parts of a
molecules around a double bond:

Question 7

Cis isomer:

Answer 7

matching alkyl groups located on same side of
the double bond.

Question 8

Trans Isomer:

Answer 8

groups located on opposite sides of the
double bond.

Question 9

Reactions of Alkenes and
Alkynes:

Addition Reaction

Answer 9

atoms of one molecule are added to an alkene to break the double bond.

Question 10

Hydrogenation:

Answer 10

hydrogen atoms are added

Question 11

Halogenation:

Answer 11

a halogen such as bromine or chlorine reacts and produces an alkyl halide.

Question 12

Hydration on Alkenes

Answer 12

Water is added (H2O)

Question 13

MARKOVNIKOVS RULE

“The rich get richer”

Answer 13

H goes on the Carbon with more H’s attatched