AP Chemistry Unit 3

Front

List the 4 Intermolecular forces from weakest to strongest.

Back

London dispersion, dipole-dipole, hydrogen bonding, ion-dipole.

Front

What is the gas with a volume of 752 mL at 1.98 atm and 62ºC for a sample of 2.49 g?

Back

NO₂.

Front

As the frequency of an electromagnetic wave increases, what happens to the energy in that wave?

Back

The energy increases.

Front

A photon is a _________ of light.

Back

particle.

Front

Calculate the frequency of a photon with a wavelength of 4.22x10^-7 nm (v=c/λ).

Back

7.11x10^14 Hz.

Front

What are the units of frequency?

Back

Hertz (Hz).

Front

Define London dispersion forces.

Back

Weak intermolecular forces arising from temporary dipoles in molecules.

Front

What is the relationship between wavelength and frequency?

Back

They are inversely related; as one increases, the other decreases.

Front

What is the formula for calculating the energy of a photon?

Back

E = hν, where E is energy, h is Planck's constant, and ν is frequency.

Front

What is the significance of ion-dipole forces?

Back

They are strong intermolecular forces that occur between ions and polar molecules.