April 2020
Intermediate to advanced
296 pages
5h 20m
English

O2 bestows each breath of life—this gas, one fifth of air,
Produced through photosynthesis in plants so green and fair.
Most common atom in Earth’s crust,
Essential when all fuels combust,
A vital shield ’gainst sun’s UV—that’s ozone’s fragile layer.
O2—when liquid—pours pale blue, to bridge magnetic poles.
Acetylene-O2’s bright heat through solid steel melts holes.
Should cabin pressure fade away,
Sweet ozone wafts when printers whir, when rumbling thunder rolls.
oh-two
THE GASEOUS ELEMENT AT THE TOP OF GROUP 16
Oxygen (as the ...