Chemical Reactions vs Physical Changes

What happens in ALL chemical changes?

• Change in state of matter

• A new product is formed

• Bubbles are produced

• An explosion

Tags

NGSS.MS-PS1-2

Is milk going sour a physical or chemical change?

• Physical 
• Chemical

Tags

NGSS.MS-PS1-2

Is making orange juice a physical or chemical change?

• Physical 
• Chemical

Tags

NGSS.MS-PS1-2

Is sharpening a pencil a physical or chemical change?

• Physical 
• Chemical

This image shows what happens when methane gas (CH₄) is burned (reacts with oxygen O₂). Which of the following is a reactant?

• Methane (CH₄)

• Water (H₂O)

• Carbon dioxide (CO₂)

• none of the above

Tags

NGSS.MS-PS1-2

Is bending copper wire a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

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

Is melting butter a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-4

Blending together ingredients into a smoothie is what kind of change?

• chemical change

• physical change

• both types of changes

• none of these

Tags

NGSS.MS-PS1-2

Any time something burns, it is going through a

• chemical change

• physical change

Tags

NGSS.MS-PS1-2