Chem/Physical Changes

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

which one is the definition of chemical property?

• a property or characteristic of a substance that is observed during a reaction where the chemical composition of a substance is changed
• any change that results in the formation of new chemical substances
• combustibility

Tags

NGSS.MS-PS1-2

How do you know what a chemical change has occurred?

• A smell was created
• Bubbles were created
• A noise was created
• A new substance was created

Which is NOT a sign of a chemical change?

• Change in color
• Gas or heat was produced
• New substance is formed
• Change of state

Rotting fruit

• Chemical
• Physical

Tags

NGSS.MS-LS2-3

NGSS.MS-PS1-2

Photosynthesis

• Chemical
• Physical

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Knit a blanket

• Chemical 
• Physical

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS1-3

Change in size

• Chemical
• Physical

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-4

Which type of change involves breaking the bonds in a substance in order to form new ones?

• Chemical Change
• Physical Change