Chemistry 12:1 Check for Understanding

A hydrocarbon contains

• C, H, and O

• C and H

• C, H, and N

• C and O

An unsaturated hydrocarbon contains less than the maximum number of

• carbon atoms

• hydrogen atoms

• oxygen atoms

• halogen atoms

The molecule with the structure CH₃CH₂CH₂CH₂CH₃ is named

• pentane

• ethane

• butane

• heptane

Carbon has _____ valence electrons.

• two

• five

• four

• three

Geometric isomers have

• different structural formulas

• different molecular formulas

• different three-dimensional configurations

• numbers of carbons