AP Chemistry-Unit 3 Review #2

Front

What property does chromatography use to separate mixtures?

Back

Intermolecular forces.

Front

What is an example of a covalent network solid?

Back

Diamond.

Front

What is the formula to calculate the energy of a photon?

Back

E = hv, where E is energy, h is Planck's constant, and v is frequency.

Front

What is the energy of blue light with a frequency of 6.91x10^14 Hz?

Back

4.56x10^-19 J.

Front

What explains the difference in melting points between Cl2 and F2?

Back

Increased mass (polarizability) of chlorine.

Front

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

Back

The energy increases.

Front

Define covalent network solid.

Back

A solid where atoms are bonded by covalent bonds in a continuous network.

Front

What is polarizability?

Back

The ability of an electron cloud to be distorted by an external electric field.

Front

What is the relationship between frequency and wavelength in electromagnetic waves?

Back

They are inversely related; as frequency increases, wavelength decreases.

Front

What is the significance of Planck's constant in quantum mechanics?

Back

It relates the energy of a photon to its frequency.