24.25 Unit 3 TEST Review

Front

What is sublimation?

Back

Sublimation is the process in which a solid changes directly into a gas without passing through the liquid phase. An example is dry ice (solid CO2) turning into carbon dioxide gas.

Front

What does Charles's Law state?

Back

Charles's Law states that the volume of a gas is directly proportional to its temperature (in Kelvin) when pressure is held constant.

Front

What happens to the volume of a gas when its temperature increases according to Charles's Law?

Back

The volume of the gas will increase.

Front

What does the letter 'C' represent in a phase diagram?

Back

In a phase diagram, the letter 'C' typically represents the gas phase.

Front

What does the letter 'D' represent in a phase diagram?

Back

In a phase diagram, the letter 'D' represents the triple point, where solid, liquid, and gas phases coexist.

Front

What is the normal melting point of a substance?

Back

The normal melting point is the temperature at which a solid becomes a liquid at 1 atm pressure.

Front

What is the significance of the triple point in a phase diagram?

Back

The triple point is significant because it is the unique set of conditions at which all three phases (solid, liquid, gas) of a substance can coexist in equilibrium.

Front

What is vaporization?

Back

Vaporization is the process by which a liquid turns into a gas. This can occur through boiling or evaporation.

Front

What is condensation?

Back

Condensation is the process by which a gas turns into a liquid, often when it cools down.

Front

What is the critical point in a phase diagram?

Back

The critical point is the end point of a phase equilibrium curve, beyond which the liquid and gas phases become indistinguishable.