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Sodium Na
Where is sodium used--or where does it impact your everyday life?
Used in sodium vapour lamps--some older road lamps which are red when first turned on and then produce a bright yellow light
Sodium, symbol Na
Atomic Number: 11
Atomic mass: 22.9
Melting Point: 97.8 °C
Boiling Point: 883 °C
Density: 0.97 g/mL less dense than water--floats
Electron config: [Ne]3s1
Researcher: Angela C
Sérandite, Na(Mn,Ca)2Si3O8(OH) from Mont Saint-Hilaire, Quebec, Canada discovered by J.M. Sérand in 1931, on display at the National Museum of Natural History in Washington D.C. contains element number 11 on the periodic table: sodium, a soft, silvery white and reactive metal. Sérandite is most abundant in Canada while China is sodium’s #1 producer. Photographer: Annarosa Z
Sodium is an important dietary component--in salt, sodium chloride, NaCl
In this snack, the nutrition analysis shows 8% of the recommended daily allowance of sodium in the snack.
WIS Photographer
Glaucophane
Formula: Na2Mg3Al2Si8O22(OH)2
From the Franciscan Complex, California on display at the National Museum of Natural History in Washington D.C. and viewed during a Chemistry One field trip.
The mineral sample contains sodium, Na, whose abundance in the Earth’s crust = 2.6%, A bundance in the universe = 0.002%
Photographer: Annarosa Z
Sodium is used in bright lights including many streel lamps in Washington D.C., USA. An electric charge or arc, passes across a space between two electrodes and the sodium vapor produces a bright glow (in the presence of some mercury vapor). The bulb uses lucalox, which is an aluminum oxide, Al2O3, ceramic, to make the outer bulb so it can withstand high temperatures.
WIS photographer
Labradorite
Formula: (Ca,Na)(Si,Al)4O8
3.2 and 1.7 carat gem sizes
From Oregon, USA on display at the National Museum of Natural History in Washington D.C.
Photographer: Annarosa Z
Sugilite
Formula: KNa2Li3(Fe,Mn,Al)2Si12O30
The gem is 23.5 carats (1 carat = 0.2 g [0.007 oz])
From where: Kalahari Desert, Cape Province, South Africa on display at the National Museum of Natural History in Washington D.C. and viewed during a Chemistry One field trip.
Photographer: Annarosa Z
These dolmades, stuffed grape leaves, have 350 mg sodium or 14% of your recommended daily allowance in a serving.
WIS Photographer
Color sodium flame, element # 11
Crayola yellow crayon
2Na + Cl2 --> 2NaCl
