25.1.2 Alkenes and Alkynes

Question 1

Which statement about hydrocarbons is not correct?

Answer 1

Alkanes, alkenes, and alkynes all contain at least one pi bond.

Question 2

Which statement about alkenes is not correct?

Answer 2

An alkene with three carbon atoms has eight hydrogen atoms.

Question 3

Which statement about alkene isomers is not correct?

Answer 3

Alkenes are less reactive than alkanes.

Question 4

Which statement about alkynes is not correct?

Answer 4

Alkynes have a triple bond, consisting of two σ bonds and one π bond.

Question 5

Which statement does not correctly describe a characteristic of a π bond?

Answer 5

The greatest electron density exists along the internuclear axis.

Question 6

Which statement about a σ bond is not true?

Answer 6

It does not involve actual bond overlap.

Question 7

Which statement about an alkene is not correct?

Answer 7

The simplest alkene is propene.

Question 8

Which statement about alkenes is not correct?

Answer 8

Each carbon (orbital) is sp hybridized.

Question 9

Which statement about alkenes is not correct?

Answer 9

The position of the double bond must be specified for alkenes that have more than two carbons.

Question 10

Which statement about alkynes is not correct?

Answer 10

Alkynes have one π and two σ bonds.