Phase Change Amplify - End of Unit Study Guide

Front

What happens to the kinetic energy of molecules when they move faster?

Back

The kinetic energy is increasing.

Front

How does the attraction between molecules affect phase change?

Back

A weaker attraction allows molecules to move around each other, leading to phase changes.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is the difference in molecular movement between solids and liquids?

Back

In solids, molecules move in place; in liquids, they move 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.

Front

What occurs to water molecules when ice melts?

Back

The water molecules begin to move around each other as the solid ice turns into liquid water.

Front

What is the relationship between temperature and molecular movement?

Back

As temperature increases, molecular movement increases.

Front

What is an example of a substance that can exist in all three states of matter?

Back

Water can exist as ice (solid), liquid water, and steam (gas).

Front

What happens to the molecules of a substance when it freezes?

Back

The molecules slow down and move closer together, forming a solid.

Front

What is the significance of energy transfer in phase changes?

Back

Energy transfer can cause substances to change from one phase to another, such as melting or boiling.