States of Matter and Phase Changes

What are the three main states of matter found on Earth?

• Solid, liquid, plasma

• Solid, liquid, gas

• Liquid, gas, vapor

• Solid, plasma, gas

What happens to a material when it is heated?

• It loses heat energy.

• Its particles move slower.

• Attractive forces between molecules break.

• It always turns into a solid.

What is the process called when a solid changes into a liquid?

• Freezing

• Melting

• Evaporating

• Condensing

What is the process called when a liquid changes into a gas?

• Freezing

• Melting

• Evaporating

• Condensing

What is the process called when a gas changes into a liquid?

• Freezing

• Melting

• Evaporating

• Condensing

What is the process called when a liquid changes into a solid?

• Freezing

• Melting

• Evaporating

• Condensing

What is the main difference between evaporation and boiling?

• Evaporation is faster than boiling.

• Boiling only happens at the surface, while evaporation happens throughout.

• Evaporation only happens at the surface, while boiling happens throughout.

• Boiling changes a liquid to a solid, while evaporation changes a liquid to a gas.

Which of these is an example of condensation?

• Ice melting into water.

• Water boiling in a pot.

• Dew forming on grass in the morning.

• Dry ice turning into gas.

What is the process called when a solid turns directly into a gas without becoming a liquid first?

• Evaporation

• Condensation

• Sublimation

• Melting

When a material changes its state, what happens to its mass and density?

• Both mass and density change.

• Mass stays the same, but density changes.

• Density stays the same, but mass changes.

• Both mass and density stay the same.