Liquid Oxygen

Oxygen is most commonly found in the ____________phase.

• liquid

• solid

• gas

• plasma

Tags

NGSS.MS-PS1-4

Liquid oxygen is ________ in color.

• red

• blue

• green

• orange

The most common liquid on Earth is...

• water

• oil

• methane

• vinegar

Tags

NGSS.MS-ESS2-4

Liquid oxygen is difficult to find because..

• there is no such thing as liquid oxygen

• oxygen molecules are always bonded together

• It is difficult to see

• the attraction between oxygen molecules is not very strong

In the gas phase molecules have...

• high kinetic energy and move apart from each other

• low kinetic energy and stick together

• strongly bonded molecules

• the ability to make many many bonds

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Substances change phase when...

• they feel like it is time to make a change

• either the molecular attraction or kinetic energy wins the tug of war battle

• the attractions between molecules becomes too strong

• it is warmer than 100 Celsius

Tags

NGSS.MS-PS1-4

For oxygen to change to a liquid...

• you must drink lots of water

• the molecules must come closer and closer together

• it must become very warm

• the attraction that pulls molecules toward each other must overcome energy that pulls them apart

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

To change oxygen to a liquid

• energy must be transferred in

• energy must be transferred out

• energy must be created

• an electric charge must be added to the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

To separate oxygen from the air scientist send the air through

• a machine with tanks at the same temperature

• a big tank with cool air

• a machine with tanks at different temperatures

• a fan

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

To create liquid oxygen the temperature must be

• very warm

• very humid

• very cold

• at normal room temperature

Tags

NGSS.MS-PS1-4