Ice Cream in a Bag

What types of phase changes will take place when we are making ice cream? (Choose all that apply)

• freezing

• melting

• vaporization/boiling

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

Why do we add salt to the ice?

• To add flavor to the ice cream

• to lower the temperature at which water freezes

• to melt the ice faster

• to completely stop the ice from ever melting

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What phase change occurs when the milk mixture goes from liquid to solid ice cream?

• melting

• sublimation

• freezing

• condensation

Tags

NGSS.MS-PS1-4

How do the molecules in the milk mixture respond to the addition of ice & salt?

• the molecules speed up

• the molecules slow down

• the molecules come to a stop

• the molecules return to normal

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What state of matter is the milk when you begin?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What state of matter should the milk be when you were finished?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happened to the heat energy that left the milk?

• the heat energy disappears

• the heat energy transfers to the ice

• the heat energy energy changes to electricity

• the heat energy becomes a liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Why did the outside of the bag get wet? (Choose the best response)

• condensation occurred because the moisture in the air cooled when it came in contact with the cold ice

• bags leak

Tags

NGSS.MS-PS1-4

How could you turn your ice cream back into a liquid?

• remove heat from the ice cream

• freeze molecules

• put it in the freezer

• add heat to the ice cream

Tags

NGSS.MS-PS1-4

At which phase do molecules move the fastest and spread apart?

• solid

• liquid

• gas

• plastic

Tags

NGSS.MS-PS1-4