Study Jams: Physical and Chemical Changes

Which of the following examples is a physical change but NOT a change of state of matter?

• logs burning

• water freezing into ice cubes

• candle wax melting

• paper being cut

Which of the following is an example of a chemical change?

• a penny tarnishing

• a mirror being scratched

• hair being cut

• water being boiled

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A teacher takes a tray of ice cubes out of the freezer. Each student takes an ice cube and holds it in their hands. They make the observations listed in the chart. The student claims that changing the temperature of the water causes a physical change that turns water into ice.

Which argument BEST supports the student’s claim?

• The ice cube is melting in the student’s hand since the hands are much warmer than the ice. Heat is being added to the ice, which causes the particles to move faster.

• The ice cube is freezing in the student’s hand since the hands are much warmer than the ice. Heat is being removed from the ice, which causes the particles to move slower.

• The ice cube is melting in the student’s hand since state is changing from a solid to a liquid. Heat is being removed from the ice, which causes the particles to move faster.

• The ice cube is melting in the student’s hand since state is changing from a liquid to a solid. Heat is being added to the ice, which causes the particles to move slower.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

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

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

The melting of wax is an example of a

• chemical change

• physical change

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

Tags

NGSS.MS-PS1-2

Freezing Juice?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS3-5

A change where one or more new substances are created.

• Physical Change 

• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5