Chemical vs Physical Changes/Conservation-Practice

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

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

A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?

• Texture
• Temperature
  
• Shape
•  Mass

Tags

NGSS.MS-PS1-4

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

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Tags

NGSS.5-PS1-4

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Weirdo teacher Ferguson added 6 g of liquid wax to a cup that weighed 12 g. What is the weight of the cup and its contents after the wax solidifies?

• 6 g

• 18 g

• 12 g

• 24 g

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

FRYING AN EGG is an example of a:

• Chemical change
• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-LS1-7

SLICING PIZZA is an example of a:

• Chemical change
• Physical change