A Real-World Chemist

What field does Bart Eklund work in?

• Atmospheric chemistry

• Biochemistry

• Nuclear chemistry

• Organic chemistry

What was the initial perception of Freon-12 when it was first synthesized?

• A near-miracle substance

• A harmful chemical

• An ineffective refrigerant

• A dangerous material

What environmental issue did CFCs cause?

• Ozone layer depletion

• Global warming

• Water pollution

• Deforestation

What was Freon-12 initially used to replace in refrigeration systems?

• Ammonia

• Carbon dioxide

• Methane

• Nitrogen

What is the current attitude of chemical manufacturers towards the environment?

• Leaders in finding solutions

• Indifferent to environmental issues

• Opposed to environmental regulations

• Focused on profit only

What is the good news mentioned about CFCs in the passage?

• Levels of CFCs in the atmosphere are dropping

• CFCs are no longer used

• CFCs have been completely eliminated

• CFCs are beneficial

What does the story of CFCs demonstrate about addressing environmental problems?

• We can respond quickly if we decide to

• It's impossible to solve environmental issues

• Only governments can solve these problems

• Environmental problems are not urgent