States of Matter

Front

What is a solid?

Back

A solid is a state of matter where molecules are tightly packed together, have a definite shape, and vibrate in place.

Front

What is a liquid?

Back

A liquid is a state of matter that has a definite volume but takes the shape of its container. Molecules are close together but can move past one another.

Front

What is a gas?

Back

A gas is a state of matter where molecules are far apart and move freely. It has no definite shape or volume.

Front

What is plasma?

Back

Plasma is a state of matter similar to gas but consists of charged particles, including ions and electrons. It conducts electricity and is found in stars.

Front

What are atoms?

Back

Atoms are the basic building blocks of matter, made up of protons, neutrons, and electrons.

Front

What are molecules?

Back

Molecules are groups of two or more atoms bonded together, representing the smallest unit of a chemical compound.

Front

What happens to molecules in a solid when heated?

Back

When heated, the molecules in a solid gain energy, vibrate more, and may eventually break free to become a liquid.

Front

What happens to molecules in a liquid when heated?

Back

When heated, the molecules in a liquid gain energy, move faster, and may eventually break free to become a gas.

Front

What is the particle theory of matter?

Back

The particle theory of matter states that all matter is made up of tiny particles that are in constant motion.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.