Matter has SOLID, LIQUID or GAS/VAPOR forms


Solid water is ICE, water VAPOR is STEAM


Water boils at 212 F/100 C. Thats HOT


Water freezes at 32F/0 C. Thats COOL.


Air is 80% NITROGEN, 20% OXYGEN

Argon and Carbon Dioxide (CO2) also


GASES in air can be liquefied and frozen

(they cool by expanding)


Nitrogen boils at 321 F/-196 C. Thats COLD


At 321F water freezes (FAST).


At 321F atoms move slower and things are smaller.


At 321F materials are harder and more brittle.


At 321F magnets can be levitated by superconductivity.


At 321F OXYGEN is LIQUID too.