Prepare for the CLEP Natural Science Exam with our comprehensive study materials and practice questions. Test your knowledge and ace the exam by mastering key concepts.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


What is the term for a combination of oxygen and nitrogen in the atmosphere?

  1. Ozone

  2. Stratospheric

  3. Aerosol

  4. Nitrogen dioxide

The correct answer is: Ozone

The correct term for a combination of oxygen and nitrogen in the atmosphere is Ozone. Ozone is a form of oxygen that is made up of three oxygen atoms, while oxygen in its regular form is made up of two oxygen atoms. Stratospheric refers to the layer of the atmosphere that is above the troposphere, so it is not the term for a combination of oxygen and nitrogen. Aerosol refers to small particles suspended in the atmosphere, such as pollutants or water droplets, and not a combination of oxygen and nitrogen. Nitrogen dioxide is a compound made up of nitrogen and oxygen, but it is not the term for the combination of oxygen and nitrogen in the atmosphere.