Module 2 Intro

Module 2—Chemical Compounds

Explore

 

Read

 

Your study in Module 1 focused on reviewing intramolecular forces. In this module you have been learning about intermolecular forces.

 

Read about intermolecular forces on pages 105 and 106 in your textbook.

 

Watch and Listen

 

View the animation that illustrates the formation of a momentary dipole between carbon atoms. A momentary dipole is an uneven distribution of electrons around a molecule, resulting in a temporary charge difference between its ends. The predicted existence of momentary dipoles is an important part of the hypothesis supporting the London force. How is it possible for atoms to have momentary dipoles?

 

View the animation that illustrates the attractions between polar molecules. Can you recall what causes molecules to be polar?

 

Is there a similarity between London forces and dipole-dipole forces?

Make sure you answer these questions as you complete the next activity.

 

Try This

 

Construct a table to summarize the differences between intramolecular and intermolecular bonding forces.

 

In your table provide examples of each type of bonding and a brief description. For each example, indicate factors that will influence the strength of the respective type of bond.

 

Send a copy of your table to your teacher for feedback.

 

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