phase changes

Multiple Select

Which of the following are true about liquids?

• Liquids have a definite volume.

• Particles in liquids are very close together.

• Liquids have a definite shape.

• Liquids have an indefinite shape.

Multiple Choice

Which of the following statements about the states of matter is correct?

• Solids have an indefinite shape and volume.

• Liquids have a definite shape and volume.

• Gases have an indefinite shape and volume.

• Particles in solids are very close together.

Fill in the Blanks

Temperature is a measure of the average

energy of the particles of a substance.

Fill in the Blanks

Fill in the blank: The transformation of one state of matter into another is called

.

Multiple Choice

Which of the following best describes evaporation?

• Change from solid to liquid

• Change from liquid to gas at the surface of a liquid

• Change from gas to liquid

• Change from solid to gas

Multiple Select

Which of the following are required for cloud formation during condensation?

• Relative humidity rises to 100%

• Saturation of the air occurs

• Condensing nuclei must be present

• Temperature must decrease

Multiple Choice

Which phase change involves a liquid turning into a gas at a specific temperature, such as 100°C for water at sea level?

• Melting

• Boiling

• Sublimation

• Deposition

Open Ended

Explain what happens to coconut oil when it is held in your hand, based on your observations from the experiment.

Multiple Choice

Which of the following phase changes involves a solid turning directly into a gas without passing through the liquid phase?

• Melting

• Boiling

• Sublimation

• Deposition

Multiple Select

Select all the phase changes that do NOT pass through the liquid phase.

• Sublimation

• Boiling

• Deposition

• Melting

Fill in the Blanks

During a phase change, the temperature of the matter remains

.

Open Ended

What is the relationship between kinetic energy and intermolecular force during phase changes?

Multiple Choice

A teacher heats a solid sample of tin in a classroom demonstration. For a brief period, the temperature of the tin stops rising, even though the tin continues to absorb heat. What occurs during this period?

• The atoms in the tin sample lose electrons.

• The nuclei of tin atoms increase in volume.

• The tin sample changes phase from solid to liquid.

• The bonds between tin atoms convert to heat energy.

Open Ended

Reflecting on today's lesson about phase changes, what is one real-life example where you have observed a phase change, and how did it impact your understanding of the topic?