Chemistry 07：Intermolecular Forces

Do you know how molecules are attracted to other molecules? In this content, we will talk about the different types of bonds that exist between molecules, including ion-ion, ion-dipole, dipole-dipole, and Van der Waals.

Activities:

I. Intramolecular Forces vs Intermolecular Forces:

• Explain the differences between intramolecular forces and intermolecular forces by drawing out examples of each.

II. Ion-ion:

• Use an example of ion-ion interaction to explain the concept.
• Show and explain what formal charge is.
• 💡 Originals Content Tip: Use the “pop quiz” feature and ask students to “throw” in their answers to the problem.

III. Ion-dipole:

• Use an example of ion-dipole interaction to explain the concept
• Explain what a dipole is and how partial negative and partial positive charge relate to it.
• 💡 Originals Content Tip: Use the “pop quiz” feature and ask students to “throw” in their answers to the problem.
• PhET Activity: Teachers/students may use PhET to better understand and visualize molecule polarity.

IV. Dipole-dipole:

• Use an example of dipole-dipole interaction to explain the concept.
• Show and explain what hydrogen bonds are.
• 💡 Originals Content Tip: Use the “polls” feature and ask students to input their answers to the problems. Then, view and discuss the class result.

V. Van der Waals:

• Use an example of Van der Waals interaction to explain momentary dipole, induced dipole, and the concept of Van der Waals.
• 💡 Originals Content Tip: Use the “polls” feature and ask students to input their answers to the problems. Then, view and discuss the class result.