Chemical Versus Physical Changes

Sodium Hydroxide dissolves in water

• Chemical Change
• Physical Change

Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A pellet of sodium is sliced in two

• Chemical change
• Physical Change

Potassium chlorate decomposes to potassium chloride and oxygen gas.

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Iron rusts.

• Chemical change
• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When placed in H₂0, a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms.

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Evaporation

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Ice Melting

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-4

Milk Sours

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Sugar dissolves in water

• Chemical Change
• Physical Change