This week, we learned all about intermolecular forces. We completed a few POGILs this week on Intermolecular forces and Water learning about the four different types of intermolecular forces while also learning what the difference between intramolecular and intermolecular forces were. During the week, we completed several lecture quizzes on each of the four different types of intermolecular forces. As the week came to a close, we began working on the Lecture 23 worksheet and were introduced to liquids and solids.
The first thing we learned about in this unit was the various types of intermolecular forces. We spent two days reviewing a POGIL and had multiple lecture quizzes on this subject because it is so important. This POGIL first taught us the correlation between increasing molecular weight and increasing intermolecular forces with increasing boiling point of molecules. It also taught us the difference between intermolecular and intramolecular in that intra means within a molecule where inter is bonding two molecules together. The POGIL also introduced us to the 3 main types of intermolecular forces which are hydrogen bonding, dipole-dipole forces, and induced dipole-induced dipole or London Dispersion Forces. Links further explaining each of the forces further in depth are listed below.
The strongest of the forces, Hydrogen bonding, was a huge focus in the lessons this week. We learned all about the different types of forces present in each molecule. The pictures below illustrate the strengths of the different forces, an example of some molecules with multiple charges, and a little explanation of what hydrogen bonds really are. As seen below, London Dispersion forces are found in every compound. However, dipole-dipole forces are only found when there is a dipole in the molecule whereas there must be and O, N, or F present next to the H atom for Hydrogen bonding to occur. Dipole-induced dipole forces are not very commonly found s we id not really address them this week.
The water POGIL helped us get a very good interpretation of what hydrogen bonds are, when, and where these hydrogen bonds occur. We spent only a few days working on it though before moving into liquids and solids which we started this weekend. We completed a lecture quiz on both liquids and solids on Sunday and I believe we will go much further in depth with that subject next week.
Overall, my participation this week was very good. I understand most of the concepts from this week pretty well besides the Dipole-Induced Dipole forces. Those were very confusing to me. I think I still need to work on memorizing the charges and their properties a little bit more. I am excited to see where we move on to next week!
No comments:
Post a Comment