Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
4 Cards in this Set
- Front
- Back
|
What is the 3 types of intermolecular forces in order of increasing strength |
Van der Waals (temporary dipole-dipole interaction) Permanent dipole-dipole interaction Hydrogen bonding (special type of permanent dipole-dipole interaction |
|
|
How does a Van der Waals form |
The electrons around an atom or molecule will fluctuate. This causes temporary dipoles. This induces a dipole in another atom or molecule forming a VDW attraction between them. |
|
|
What effects strength of VDW attraction |
The more electrons, the higher the fluctuation in the charge because there is more negatively charged electrons. The VDW forces are stronger The size of atom. Greater surface area more areas of contact stronger forces |
|
|
How is a hydrogen bond formed |
When Fluorine Oxygen or Nitrogen are covalently bound to hydrogen. There is a large electro negativity different. The H+ ion will attract the lone pair of electrons from the other molecule forming a hydrogen bond. |
