Exploring Matter and Sound

What are the three states of matter?

• plasma, vapor, foam

• solid, liquid, plasma

• solid, liquid, gas

• gas, liquid, crystal

Which state of matter has a definite shape?

• Plasma

• Gas

• Solid

• Liquid

What is a characteristic of liquids?

• Liquids have a definite volume and take the shape of their container.

• Liquids are always solid at room temperature.

• Liquids have a definite shape and volume that can change.

• Liquids do not have a definite volume and take a fixed shape.

Can gases be compressed? Why or why not?

• Gases cannot be compressed due to their molecular structure.

• Gases have no space between molecules, preventing compression.

• Gases are always in a fixed volume and cannot change size.

• Yes, gases can be compressed.

What happens to the particles in a solid when it is heated?

• The particles lose energy and become more compact.

• The particles stop moving completely and freeze.

• The particles vibrate more and gain energy, potentially leading to a phase change.

• The particles move freely and form a gas immediately.

Name a property of gases.

• Gases are incompressible.

• Gases do not exert pressure.

• Gases expand to fill their container.

• Gases have a definite shape.

What is the medium through which sound travels?

• Electricity

• A medium (solid, liquid, or gas)

• Light

• Magnetism

How does sound travel through air?

• Sound travels through air as electrical signals.

• Sound travels through air as solid particles.

• Sound travels through air as light waves.

• Sound travels through air as pressure waves created by vibrating objects.

What is an example of a solid?

• Ice

• Water

• Air

• Steam

What happens to a liquid when it freezes?

• The liquid remains unchanged.

• The liquid evaporates into gas.

• The liquid becomes a vapor.

• The liquid turns into a solid.