AP Chemistry Unit 3 Review

Front

What is the melting point of C2H6?

Back

C2H6 (Ethane) has a low melting point compared to ionic and covalent compounds due to its molecular structure.

Front

Under what conditions does a real gas behave like an ideal gas?

Back

A real gas behaves like an ideal gas under high temperature and low pressure.

Front

What is one assumption of the kinetic-molecular theory of gases?

Back

The temperature of a gas depends on the average kinetic energy of the gas particles.

Front

Which type of molecules has the highest solubility in hexane (C6H14)?

Back

Nonpolar covalent molecules have the highest solubility in hexane due to similar intermolecular forces.

Front

How do you calculate the frequency of a photon given its wavelength?

Back

Frequency (v) can be calculated using the formula v = c/λ, where c is the speed of light and λ is the wavelength.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.00 x 10^8 m/s.

Front

Define an ideal gas.

Back

An ideal gas is a hypothetical gas that perfectly follows the gas laws and has no intermolecular forces.

Front

What is the relationship between temperature and kinetic energy in gases?

Back

The temperature of a gas is directly proportional to the average kinetic energy of its particles.

Front

What is the significance of high temperature and low pressure for gas behavior?

Back

High temperature and low pressure minimize intermolecular forces, allowing gases to behave more ideally.

Front

What type of bonding is present in ionic compounds?

Back

Ionic compounds are formed by the electrostatic attraction between positively and negatively charged ions.