Some Elements of the Earth and their uses

[scrapsmith]

BROMINE

• photographic film, gasoline anti-knock, flameproofing agents, dyes

IODINE

• disinfectant, photographic material, radio active tracer

HELIUM

• balloons, blimps, lasers, hydrogen bomb, nuclear plant coolant

NEON

• neon lights, lightning arrestors, TV tubes, cryogenic refrigerant