Unit A: Chemical Change

Lesson 3.3: Petroleum Is the Source

Petroleum is the source for a numbers of hydrocarbons used to produce consumer goods.

  • Read pages 137 and 138 of the textbook, ending at the “Separating Components of a Mixture” activity. You can separate components if they have unique physical or chemical properties.
 

  • Read the entire activity on page 138 of the textbook.

    If you have access to a supervised laboratory, do Path 1. If you do not have access to a supervised laboratory, do Path 2.

  • Follow the directions of the activity, and answer the questions.

    Check your answers with those in the “Suggested Answers” in the online course.
  • Use your knowledge of the properties of each component of the mixture to answer questions 1 to 3 of “Analysis” on page 138.

    Check your answers with those in the “Suggested Answers” in the online course.

Petroleum is used to produce a large variety of hydrocarbons through processes that involve fractional distillation and refining. Because each hydrocarbon has its own boiling point, heat can be used to separate petroleum into its components.

  • Read “Separating Petroleum into Its Fractions” on page 138 of the textbook.
 

  • Read the activity on page 139 of the textbook. Follow the directions, and answer the questions.

    Check your answers with those in the “Suggested Answers” in the online course.

Many hydrocarbons require more than just fractional distillation to become usable products.

  • Read pages 140 to 142 of the textbook, ending at the “Get Cracking” activity. Answer the questions as you encounter them.

    Check your answers with those in the “Practice Answers” in the online course.

Cracking long-chain molecules can produce more than one combination of products.


  • Read the activity on page 142 of the textbook. Follow the directions, and answer the questions.

    Check your answers with those in the “Suggested Answers” in the online course.
 
  • Read “Cracking Is a Random Reaction” on page 143 of the textbook.


  • Read “3.3 Summary” on page 143 of the textbook. Then complete “3.3 Questions”.

    Check your answers with those in the “Practice Answers” in the online course.

Go to Assignment 3.3: Petroleum Is the Source