AP Chemistry unit 3 Flashcards (◕ᴥ◕´⊃)∋

For my memorization

What IMF do all molecules experience?

London Dispersion forces

Are LDR’s stronger or weaker for large molecules?

Stronger

If molecules are more polarizable, are their LDFs weaker or stronger?

Stronger

What is a general indicator that a molecule will be more polarizable?

A larger number of electrons

What kind of molecules have a dipole-dipole?

Polar molecules, due to permanent dipoles from differences in electronegativity between bonded atoms

Are strong IMFs indicative of high or low boiling/melting points?

Yes

Are hydrogen bonds the strongest IMF?

Yes, they are considered the strongest type of intermolecular forces, particularly between molecules containing hydrogen and highly electronegative atoms like nitrogen, oxygen, or fluorine

What is the difference between Intermolecular forces and Intramolecular forces?

Intermolecular forces are between neighboring molecules

Intramolecular forces are the forces that hold the atoms within a single molecule together

If ion-dipole forces are stronger than the ionic bonds, how does it affect the dissolution rate of the molecule?

It would increase the rate at which the molecule dissolves in a polar solvent

Some properties of Covalent network solids are_ {think diamonds}

• High melting and boiling point

• They are hard, non-conductive, and have a rigid structure

• Insoluble

• Strongest covalent forces

• Crystal lattice structure

Some properties of molecular solids are_ {think sugar}

• Low melting point

• weak forces

• Usually soluble in polar solvents

Amorphous structures are_

the messy ones and has vibrational motion

What is the relationship between pressure and volume on a graph?

Limp noodle or an inverse relationship as shown by Boyle's Law (where an increase in pressure leads to a decrease in volume and vice versa, assuming temperature is constant)

Ideal gasses have_

no intermolecular forces and occupy no volume

Under which conditions do gasses behave closest to ideal?

At high temperature and low pressure

What’s another word for a homogeneous mixture?

A solution

Ultraviolet light is associated with what change in electrons?

Electron transition

Microwave radiation is associated with what change in electrons?

Rotation of molecular bonds

Infrared light is associated with what change in electrons?

Vibration of molecular bonds