Mainguy 4.5 Phase Change Final Assessment

Front

What happens to water molecules when the temperature increases?

Back

The molecules start moving faster.

Front

How does the kinetic energy of molecules change when they move faster?

Back

The kinetic energy is increasing.

Front

What is the state of water when its molecules are moving in place?

Back

Solid.

Front

What is the state of water when its molecules are moving around each other?

Back

Liquid or gas.

Front

What happens to the molecules of a substance when it cools down?

Back

The molecules start moving slower.

Front

What is a phase change?

Back

A transition of a substance from one state of matter to another (solid, liquid, gas).

Front

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

Back

Energy is absorbed by the molecules.

Front

What happens to the energy of molecules during a phase change from liquid to gas?

Back

Energy is absorbed by the molecules.

Front

What happens to the molecules of a substance when energy is transferred into it?

Back

The molecules start moving faster.

Front

What is the effect of temperature on the movement of molecules?

Back

Higher temperature increases molecular movement.