Phase Changes of Matter

The video tutorial explains the three states of matter: solids, liquids, and gases, and how they change from one state to another through processes like melting, evaporation, condensation, and freezing. It provides examples and experiments to illustrate these phase changes, emphasizing the role of heat in these transformations.

Which state of matter has a definite shape and volume?

• Plasma

• Solid

• Liquid

• Gas

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

• Evaporation

• Condensation

• Freezing

• Melting

When water is heated and turns into steam, what phase change is occurring?

• Melting

• Condensation

• Evaporation

• Freezing

In the experiment with a glass of hot water and a lid, what phase change is demonstrated?

• Sublimation

• Condensation

• Evaporation

• Melting

What happens to the particles in a liquid when it freezes?

• They disappear

• They stay the same

• They move slower

• They move faster

What is the term for the conversion of gas into liquid?

• Freezing

• Evaporation

• Melting

• Condensation

Which phase change involves a liquid turning into a gas?

• Melting

• Condensation

• Freezing

• Evaporation

What is the result when heat is removed from a liquid?

• It freezes

• It melts

• It evaporates

• It condenses

What is the process called when ice turns into water?

• Condensation

• Sublimation

• Melting

• Freezing

What happens to the particles in a gas during condensation?

• They disappear

• They stay the same

• They slow down

• They speed up