4.5 Phase Change Final Assessment

Front

What happens to molecules during a phase change from liquid to solid?

Back

The molecules move from moving around each other to moving in place.

Front

What happens to water molecules when water changes from solid to liquid?

Back

The molecules change from moving in place to moving around each other.

Front

What is a phase change?

Back

A phase change is the transformation of a substance from one state of matter to another, such as solid, liquid, or gas.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

How do molecules behave in a solid state?

Back

Molecules in a solid state are closely packed and vibrate in place.

Front

How do molecules behave in a liquid state?

Back

Molecules in a liquid state are close together but can move around each other.

Front

How do molecules behave in a gas state?

Back

Molecules in a gas state are far apart and move freely.

Front

What is the effect of temperature on molecular movement?

Back

Increasing temperature generally increases molecular movement, while decreasing temperature slows it down.

Front

What is melting?

Back

Melting is the phase change from solid to liquid.

Front

What is freezing?

Back

Freezing is the phase change from liquid to solid.