COOL SCIENCE is HOT!
Solid water is ICE, water VAPOR is STEAM
Water boils at 212° F/100° C. That’s HOT
Water freezes at 32°F/0° C. That’s 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. That’s COLD
At –321°F water freezes (FAST).
At –321°F atoms move slower and things are smaller.
At –321°F materials are harder and more brittle.
At –321°F magnets can be levitated by
superconductivity.
At –321°F OXYGEN is LIQUID too.