Free Radical Substitution Quiz

What is a free radical?

• An atom or molecule with an unpaired electron

• An atom or molecule with a paired electron

• A molecule with a double bond

• A stable molecule with no electrons

Which of the following is necessary to initiate the formation of halogenal alkanes?

• Ultraviolet light

• Microwave radiation

• Infrared light

• Visible light

What is the first step in the free radical substitution mechanism?

• Propagation

• Termination

• Initiation

• Condensation

What is the product formed when hexane reacts with bromine in the presence of UV light?

• Iodohexane

• Fluorohexane

• Bromohexane

• Chloromethane

What is the process called when a bond breaks equally and each atom takes one electron?

• Electrolysis

• Homolytic fission

• Hydrolysis

• Heterolytic fission

Which of the following is a possible termination step in free radical substitution?

• A free radical splitting into two atoms

• Formation of a new free radical

• A free radical reacting with a stable molecule

• Two free radicals reacting to form a stable molecule

What is the role of ozone in the outer atmosphere?

• To increase greenhouse gases

• To degrade paints and plastics

• To protect from ultraviolet radiation

• To cause lung irritation

What is the molecular formula of ozone?

• O4

• O3

• O5

• O2