Physical and Chemical Changes

Sodium metal is cut with a knife

• Physical 

• Chemical

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A teacher is demonstrating physical and chemical changes to her class. Which action should they use to demonstrate a chemical change?

• Cutting a piece of paper with scissors.

• Folding a piece of paper into an airplane.

• Ripping a piece of paper with their hands.

• Burning a piece of paper with a match.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify the change shown in the picture.

• Irreversible physical change

• Irreversible chemical change

• reversible physical change

• reversible chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select ALL the characteristics of a physical change.

• changes in appearance only

• a new substance is not created

• changes the pH level

• chemical bonds are not created or broken

• burning and fire

Which of the following examples represents a physical change?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-4

Which of the following is evidence of a physical change?

• new substance

• shape change

• light produced

• gas released

A physical change is

• a change where the characteristics do not change the substance

• a change where the characteristics do change the substance

• a change where the chemistry changes

What is the definition of chemical change?

• any change that results in the formation of one (or more) new chemical substance(s)

• changing of only the appearance of the object

• 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 of these is an example of a new substance being formed?

• a nail rusting

• a wall being painted

• water changing to steam

• paper being folded

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5