3 Topic Chem quiz

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

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

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Freezing Juice?

• Physical Change
• Chemical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Dissolving sugar in water is an example of a 

• physical change
• chemical change

Tags

NGSS.MS-PS1-4

Cutting a log in to small pieces is a chemical change.

• true

• false

Tags

NGSS.MS-PS1-2

Which is an example of a chemical reaction?

• paper cut into small pieces
• chocolate melting in a pan
• flour and sugar mixed in a bowl
• cookies baking in an oven

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Wood burned in a fireplace

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

Does a physical change the substance itself?

• yes

• no

frying an egg

• physical change
• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

separating sand and gravel

• physical change
• chemical change

Tags

NGSS.5-PS1-3