Chlorofluorocarbon

High school (ages 12+)
Environment & Earth

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/chlorofluorocarbon

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the regulatory framework?Mandated phase-out under the Montreal Protocol (1987) and subsequent amendments
2. What are chlorofluorocarbons (CFCs)?Chlorofluorocarbons, or CFCs, are chemicals made by replacing hydrogen atoms in simple gases like methane with chlorine and fluorine atoms. They are very stable, non‑toxic, and don't catch fire, which made them popular for many uses.
3. Why were CFCs used in refrigerators and air conditioners?CFCs were used in refrigerators and air conditioners because they have low boiling points and high vapor pressures, so they can easily change from gas to liquid and back to keep food and rooms cool.

Halogenated Hydrocarbons: Organic compounds containing carbon, hydrogen, and one or more halogen atoms (fluorine, chlorine, bromine, iodine).
Stratospheric Ozone Depletion: The reduction in the concentration of ozone in the stratosphere, primarily caused by anthropogenic chemicals.