24.25 Unit 3 TEST Review

Front

What does the letter C represent in a phase diagram?

Back

Gas

Front

What phase change occurs at pressures below 4.58 mmHg?

Back

Sublimation/Deposition

Front

Describe the particle arrangement in a solid.

Back

Particles vibrate, are close together, and do not move freely.

Front

What phase of matter is present after heating sodium metal for 19 minutes?

Back

Liquid

Front

During which segment of the heating curve for water can both solid and liquid phases coexist?

Back

BC

Front

What are the three main phases of matter?

Back

Solid, Liquid, Gas

Front

Define sublimation.

Back

The process where a solid changes directly into a gas without becoming a liquid.

Front

What is the critical point in a phase diagram?

Back

The temperature and pressure at which the distinction between liquid and gas phases disappears.

Front

Explain the concept of the triple point.

Back

The unique set of conditions at which all three phases of a substance coexist in equilibrium.

Front

What happens to particles in a liquid when heated?

Back

They gain energy and move more freely, potentially transitioning to a gas.