Chemistry Lecture on Liquids and Gases

These flashcards cover key concepts regarding boiling, vapor pressure, and the properties of liquids as discussed in the lecture.

Boiling Point

The temperature at which a liquid begins to boil; for water, this is 100°C.

Vapor Pressure (V.P.)

The pressure exerted by a vapor in equilibrium with its liquid at a given temperature.

Why don't oil and water mix?

Oil and water do not mix because they have different polarities; oil is non-polar while water is polar.

Surface Tension

A result of intermolecular forces, which cause liquid surfaces to behave like a stretched elastic membrane.

Volatility

The tendency of a substance to vaporize; substances with high volatility have a higher vapor pressure at a given temperature.

Heat of Vaporization

The energy required to convert a unit mass of a liquid into vapor without a change in temperature.

Intermolecular Forces (IMFs)

Forces that mediate interaction between molecules, influencing properties such as boiling point and volatility.

Kinetic Energy and Boiling

During boiling, the kinetic energy of molecules increases, allowing them to overcome intermolecular forces.