Chemical vs. Physical Changes

Ripping up paper ...

• Chemical Change

• Physical Change

A change in phase ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-4

Change in size ...

• Chemical Change

• Physical Change

Silverware tarnishing is an example of a _____ change

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Is sharpening a pencil a physical or chemical change?

• Physical 

• Chemical

Is making orange juice a physical or chemical change?

• Physical 

• Chemical

Hard-boiled eggs are the a result of a chemical change because

• the eggs are the same size before vs after.

• the eggs have different properties (smell, taste, color) before vs after.

• the eggs weigh the same before vs after.

• the eggs went through a phase change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Any time something burns, it is going through a

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A copper penny turning green after a few years is an example of ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

How do you know that setting off a firework is a chemical change?

• The firework changes its phase of matter.

• It is not a chemical change, it's physical.

• It requires energy to make the firework go off.

• It releases gas and creates heat and light.

Tags

NGSS.MS-PS1-2