Changes in Matter

Which of the four changes below would be considered a PHYSICAL change?

• a cake being baked

• a popsicle melting

• an abandoned car rusting

• wood burning

Which of the following shows particles of a substance in the GAS phase?

• 
• 
• 

Tags

NGSS.MS-PS1-4

Which of the following correctly describes matter in the SOLID phase?

• definite shape and definite volume

• definite volume but NO definite shape

• NO definite shape and NO definite volume

Which of the following correctly describes matter in the LIQUID phase?

• definite shape and definite volume

• definite volume but NO definite shape

• NO definite volume and NO definite shape

Tags

NGSS.MS-PS1-4

Which of the following correctly describes matter in the GAS phase?

• definite shape and definite volume

• definite volume but NO definite shape

• NO definite shape and NO definite volume

According to the law of conservation of mass:

• the number of atoms on each side of a chemical equation must be equal.

• there must be more atoms at the beginning of a chemical reaction than at the end.

• there must be more atoms at the end of a chemical reaction than at the beginning.

Tags

NGSS.MS-PS1-5

What happens to the molecules in a substance if you add heat energy?

• They move farther apart.

• They move closer together.

• They stay the same distance apart.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What makes a chemical change different from a physical change?

• A chemical change forms a new substance and a physical change does not.

• A physical change forms a new substance and a chemical change does not.

• Nothing. Chemical changes and physical changes are exactly the same.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

When would a substance be in the liquid phase?

• below the freezing temperature

• above the freezing temperature, but below the vaporization temperature

• above the vaporization temperature

Tags

NGSS.MS-PS1-4

What phase change is occurring when water vapor turns into water droplets on the outside of a glass?

• freezing

• melting

• vaporization

• condensation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5