Physical & Chemical Properties & Changes

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change. 

• Chemical then Physical 
• Physical then Chemical
• Both Physical
• Both Chemical

Tags

NGSS.MS-PS1-2

In baking biscuits and other quick breads, the baking powder reacts to release carbon dioxide bubbles. The carbon dioxide bubbles cause the dough to rise. 

• Physical Change
• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Tags

NGSS.MS-PS1-2

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Is making salt water to gargle with a physical or chemical change?

• physical
• chemical

Tags

NGSS.MS-PS1-2

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Tags

NGSS.MS-PS1-2

An ice cream cone melts in a kid's hand while walking outside on a hot summer day. What is this an example of?

• Physical property

• Chemical property

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-4

A silver ring gets tarnished (becomes dull) as a result of being exposed to air and moisture. What is this an example of?

• Physical property

• Chemical property

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

Water boils at 100˚C. What is this an example of?

• Physical property

• Chemical property

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4