Matter and Its Properties: Changes in Matter

Which example best describes a chemical change in matter?

• an ice cream cone melting

• a newspaper being torn into pieces

• a cup of water freezing

• a car rusting

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Chemical change____

• can occur over period of times

• always occurs over pre-determined periods of times

• always occurs over long period of times

• always occurs immediately

In a chemical reaction

• no more than two substances

• one or more substances are changed

• no new substances are formed

• no substances are changed

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

matter is constant and it does not change

• true

• false

Tags

NGSS.MS-PS1-5

Which example defines a Physical Change

• The substance has no change in size or shape

• The appearance of the substance has changed, but the chemical properties have not.

• heat is given off when the substances change

• light is given off when the substances change

What happens during a chemical change in matter?

• The substance remains chemically the same as it was before

• no heat or light is given off

• there is no visible change in the substance

• the substance chemically becomes something different

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

a tree falls in the woods and begins to decompose. This is an example of

• a chemical change

• a physical change

• flammability

• photosynthesis

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2