Physical vs. Chemical Reactions

Is making orange juice a physical or chemical change?

• Physical 
• Chemical

Is sharpening a pencil a physical or chemical change?

• Physical 
• Chemical

Is copper tarnishing a physical or chemical change?

• Physical 
• Chemical

Tags

NGSS.MS-PS1-2

What happens in ALL chemical changes?

• Change in state of matter
• A new substance is formed
• Bubbles are produced
• An explosion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is wood burning a physical or chemical change?

• Physical 
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which of the following IS a clue that a chemical change has occurred? 

• State of matter change
• Size Change
• Change in temperature
• Shape change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical change is different than a physical change because in a chemical change...

• Chemicals are used

• Molecules do not physically touch

• A new substance is formed and in a physical change no new substance is formed

• The change can be seen but in a physical change it cannot

Tags

NGSS.MS-PS1-2

What is a sign of a physical change?

• odor produced

• change in state of matter

• light

• temperature change

Tags

NGSS.MS-PS1-4

What is a sign of a chemical change?

• change in state of matter

• change in size

• change in shape

• temperature change

Tags

NGSS.MS-PS1-2

Which is a physical change?

• pennies turn green in water

• sugar dissolving in water

• charcoal gives off heat when burned

• baking soda & vinegar bubble