Matter

What is the definition of chemical change?

• any change that results in the formation of new chemical substances. 

• changing clothes

• matter cannot be created or destroyed, only change form

• changes affecting the form of a chemical substance, but not its chemical composition.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Iron

• Substance

• Mixture

• Element

• Compound

calcium

• compound

• element

• homogeneous

• heterogeneous

Which of the following is a sign that a chemical reaction has occurred?

• change in shape

• melting

• formation of a gas

• dissolving

Tags

NGSS.MS-PS1-2

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-4

Is moldy cheese a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

Is spoiled meat a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

Are fireworks exploding a physical or chemical change?

• phyiscal 

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is mowing the lawn a phyiscal or chemical change?

• physical

• chemical

Water is heated and changed to steam ________________

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-4