Changing States

Kerry took a shower last night. When she was finished, she noticed that the bathroom mirror was foggy and wet. Water vapor in the air had touched the cool mirror, and this made tiny water drops form and collect on the mirror. What process occurred on the mirror while Kerry took a shower? 

• condensation

• boiling

• freezing

• melting

A student makes a model by using a cup, some water, and plastic wrap. After the student places the model near a sunny window, moisture forms on the inside of the plastic wrap.

What change is the student most likely observing in this model?

• freezing

• condensation

• creating a solid

• formation of clouds

Tags

NGSS.MS-ESS2-4

A class is learning about states of matter. The teacher shows the students how to set up the investigation shown in the diagram.

Which of the following is the best prediction?

• The candle will change states from a solid to gas.

• The candle will change state from a gas to a solid.

• The candle will change state from a liquid to a solid.

• The candle will change state from a solid to a liquid.

Tags

NGSS.MS-PS1-4

Looking at the data table above, which question is the student most likely trying to answer with this investigation?

• In which location does the caramel candy change state the fastest?

• What causes the caramel candy to keep its shape?

• Why does the caramel candy change state?

• Which caramel candy do most students like?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What happens to the particles of a substance as it cools down and changes from a gas to a liquid?

• The particles move faster.

• The particles move slower.

• The number of particles increases.

• The number of particles decreases.

Tags

NGSS.MS-PS1-4

What happens to the particles of a solid as it melts into a liquid?

• The particles move closer together.

• The particles move farther apart.

• The number of particles decreases.

• The number of particles increases.

Tags

NGSS.MS-PS1-4

What happens to the particles of a substance as it changes from a solid to a liquid?

• The particles move closer together.

• The particles move farther apart.

• The particles stop moving.

• The particles disappear.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is not a state of matter?

• Solid

• Liquid

• Gas

• Energy

Which of the following is a change that occurs when thermal energy is added to a solid?

• It may melt into a liquid.

• It becomes more dense.

• It changes color.

• It becomes a gas immediately.

Tags

NGSS.MS-PS1-4

On a hot summer day chocolate candy can melt in your pocket.  How can you get the chocolate to return to a solid?

• add heat

• leave it in your pocket

• cool it in the refrigerator

• leave it outside

Tags

NGSS.MS-PS1-4