Phase Changes Test Chemistry

Front

What are the types of intermolecular forces?

Back

The main types of intermolecular forces include dispersion forces, dipole-dipole interactions, and hydrogen bonds.

Front

What happens when the vapor pressure of a liquid equals atmospheric pressure?

Back

The liquid will start to evaporate.

Front

Is condensation an exothermic or endothermic process?

Back

Condensation is an exothermic process.

Front

What is a substance that is solid at room temperature?

Back

Pencil is an example of a substance that is solid at room temperature.

Front

What occurs when temperature decreases and molecules move slower?

Back

Viscosity increases when temperature decreases and molecules move slower.

Front

Define vapor pressure.

Back

Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase.

Front

What is the melting point?

Back

The melting point is the temperature at which a solid becomes a liquid.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid's vapor pressure equals the external pressure.

Front

What is an endothermic process?

Back

An endothermic process is one that absorbs heat from the surroundings.

Front

What is an exothermic process?

Back

An exothermic process is one that releases heat to the surroundings.