Elements
Published on Nov 18, 2015
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PRESENTATION OUTLINE
COPPER
ATOMIC NUMBER: 29 ATOMIC MASS: 63.55
Discoverer: the Ancients Discovery Date: Prehistoric
Physical Property: Reddish-Gold Metal
Common Use: electrical wiring and coins
Fun Fact: Over 179,000 lbs. of copper was used in building the Statue of Liberty
BROMINE
ATOMIC NUMBER: 35 ATOMIC MASS: 79.90
Discoverer: Antoine-Jérôme Balard
Discovery Date: 1826
Physical Property: deep-red, oily liquid that is toxic and has a sharp smell
Common Uses: pesticides and a flame-retardant in plastics
Fun Fact: Bromine deposits are found in natural brine wells in Michigan and Arkansas
STRONTIUM
ATOMIC NUMBER: 38 ATOMIC MASS: 87.62
Discoverer: Adair Crawford
Discovery Date: 1790
Physical Property: silvery-white, shiny metal
Common Uses: manufacture of color television picture tubes and refining of zinc
Fun Fact: Strontium is used in fireworks to make the brilliant red color
Untitled Slide
Discoverers: Robert Wilhelm Bunsen, Gustav Robert Kirchhoff
Discovery Date: 1861
Physical Property: soft, silvery white metal with melting point of 102°F
Common Use: component of photocells
Fun Fact: Rubidium bursts into flame in presence of air and explodes violently when exposed to water.
NIOBIUM
ATOMIC NUMBER: 41 ATOMIC MASS: 92.91
Discoverer: Charles Hatchett
Discovery Date: 1801
Physical Property: soft, malleable, gray-white metal
Common Uses: jewelry, metal alloys in pipelines, powerful magnets, and electronics
Fun Fact: Thousands of pounds of niobium was used in air frame systems in the Gemini Space Program.
YTTRIUM
ATOMIC NUMBER: 39 ATOMIC MASS: 88.91
Discoverer: Johan Gadolin
Discovery Date: 1794
Physical Property: silvery metallic transition metal
Common Use: additive for strength in magnesium and aluminum alloys
Fun Fact: Yttrium was found in lunar rocks brought back from the NASA Apollo missions
HAFNIUM
ATOMIC NUMBER: 72 ATOMIC MASS: 178.49
