COOL SCIENCE is HOT!
Solid water is ICE, water VAPOR is STEAM
Water boils at 212¡ F/100¡ C. ThatÕs HOT
Water freezes at 32¡F/0¡ C. ThatÕs 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 Ð321¡ F/-196¡ C. ThatÕs COLD
At Ð321¡F water freezes (FAST).
At Ð321¡F atoms move slower and things are smaller.
At Ð321¡F materials are harder and more brittle.
At Ð321¡F magnets can be levitated by superconductivity.
At Ð321¡F OXYGEN is LIQUID too.