Vapor Pressure HW FCHS

Front

What happens to liquids with weak intermolecular forces?

Back

They easily evaporate.

Front

How does the strength of intermolecular forces affect the boiling point of a substance?

Back

The weaker the intermolecular forces, the lower the boiling point.

Front

Which model represents a LOWER Vapor Pressure?

Back

Model A represents a lower vapor pressure.

Front

What happens to air pressure when you increase your altitude?

Back

Air pressure decreases.

Front

Why does a gas with a lower vapor pressure have a higher boiling point?

Back

The molecules need more energy to break free of their attractions to other molecules and change phase from liquid to gas.

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 relationship between vapor pressure and volatility?

Back

A substance with high vapor pressure is considered volatile, meaning it evaporates easily.

Front

Explain the concept of intermolecular forces.

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions).

Front

What is the effect of temperature on vapor pressure?

Back

As temperature increases, vapor pressure increases due to higher kinetic energy of molecules.

Front

What is the significance of boiling point in relation to vapor pressure?

Back

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