PBA #1 Test Review 2025 version

What happens to gas in a balloon, when there is more energy in a room? (Hint: When the room is warmer.)

• The gas particles will spread apart and move faster.

• The gas particles will come closer together and slow down.

• The speed and spacing of the gas particles will not change.

Tags

NGSS.MS-PS1-4

What happens to the gas in a balloon, when you put a balloon in the freezer?

• The gas particles will spread apart and move faster.

• The gas particles will come closer together and slow down.

• The speed and spacing of the gas particles will not change.

Tags

NGSS.MS-PS1-4

What happened to the molecules of the ice cream in my hand when it started to melt?

• The solid particles will spread apart and move faster.

• The solid particles will come closer together and slow down.

• The speed and spacing of the solid particles will not change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Look at the picture. Which beaker represents the molecules of a solid?

Look at the picture. Which beaker represents the molecules of a liquid?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Look at the picture. Which beaker represents the molecules of a gas?

Select all of the following images that show a physical change:

• 
• 
• 
• 
• 

Select all of the following images that show a chemical change:

• 
• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

A change in which NEW substances are formed.

• Chemical change
• Physical change
• Casual change
• Formal change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A change in the size, shape, or state of matter.

• chemical change
• physical change

Tags

NGSS.MS-PS1-4