physical vs chemical change

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Tags

NGSS.MS-PS1-2

Freezing Juice?

• Physical Change
• Chemical Change

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Change in color is a physical change.

• True
• False

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Rust on an iron bar is an example of chemical change.

• True 
• False

Tags

NGSS.MS-PS1-2

When you break a cracker into pieces it is a...

• Chemical change
• Physical change

A mixture is the result of a physical change because...

• The parts can be separated
• A new substance is made
• There is a chemical reaction
• One part of the mixture disappears

Which of these does NOT happen during a chemical change?

• Atomic bonds are formed or break apart
• New substance(s) are formed with different chemical properties
• The number of atoms in the reaction stays the same
• The chemical properties of the beginning substance(s) are the same as those of the end product(s)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5