Matter and Phases

Front

What is the Kinetic Theory of Matter?

Back

The Kinetic Theory of Matter states that matter is made up of tiny particles that are in constant motion. The speed of this motion is related to the temperature of the substance.

Front

What phase change occurs when a liquid turns into a gas?

Back

Vaporization is the phase change that occurs when a liquid turns into a gas.

Front

In a phase change graph for water, which section represents the change from solid to liquid?

Back

Section 2 of the graph represents the phase change from solid to liquid (melting).

Front

What happens to the molecules of a liquid when it becomes a gas?

Back

The molecules gain energy when a liquid becomes a gas.

Front

Which phase of matter has particles that are most closely packed together?

Back

Solids have particles that are most closely packed together.

Front

What is the definition of matter?

Back

Matter is anything that has mass and takes up space.

Front

What are the three main phases of matter?

Back

The three main phases of matter are solids, liquids, and gases.

Front

What is melting?

Back

Melting is the phase change from solid to liquid.

Front

What is condensation?

Back

Condensation is the phase change from gas to liquid.

Front

What is freezing?

Back

Freezing is the phase change from liquid to solid.