Properties of matter

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-PS1-2

NGSS.MS-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

Change in color is a physical change.

• True
• False

Tags

NGSS.5-PS1-4

Change in density is a physical change.

• True
• False

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties

Tags

NGSS.MS-PS1-2

Ms. Ferguson added 6 g of liquid wax to a cup that weighed 12 g. What is the weight of the cup after the wax solidifies?

• 6 g
• 18 g
• 12 g
• 24 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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 is a result of a chemical change?

• A mixture
• A solution
• A new substance
• Melting or freezing

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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