Physical and Chemical Changes

A change in the appearance only of a substance

• physical change

• chemical change

A change that forms a new substance

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Sugar dissolves when dumped into water to make sugar water. What type of change is this?

• physical change

• chemical change

Baking soda fizzes and bubbles when mixed with vinegar. What type of change is this?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A log burns, making ash and smoke. What type of change is this?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Ice melts into liquid water. What type of change is this?

• physical change

• chemical change

Tags

NGSS.MS-PS1-4

Milk sours when exposed to air and starts to smell rotten. What type of change is this?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The element iron (Fe) begins to rust when exposed to oxygen in the air. Its silver color now slowly changes to a reddish-brown color. What type of change is this?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Solid dry ice (CO₂) sublimes to a gas when placed in room temperature air. What type of change is this?

• physical change

• chemical change

Tags

NGSS.MS-PS1-4

A pencil is broken in half. What type of change is this?

• physical change

• chemical change