Heat Exam Review

Front

What happens to particles in an object at higher temperatures?

Back

Particles in an object move faster.

Front

Which compound has the lowest vapor pressure at 50°C?

Back

Ethanoic acid.

Front

True or false: Melting and freezing occur at the same temperature.

Back

True.

Front

What is the relationship between intermolecular forces and boiling point?

Back

The weaker the intermolecular forces of a substance, the lower the boiling point.

Front

Calculate the energy needed to completely boil away 30 g of water at 100 ⁰C.

Back

67,800 J.

Front

Define heat in the context of thermodynamics.

Back

Heat is the energy transferred between systems or objects with different temperatures.

Front

What is the specific heat capacity of water?

Back

4.18 J/g°C.

Front

Explain the concept of latent heat.

Back

Latent heat is the amount of heat required to change the state of a substance without changing its temperature.

Front

What is the boiling point of water at standard atmospheric pressure?

Back

100°C.

Front

Define vapor pressure.

Back

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