SODIUM

HISTORY-ISOLATION

• First isolated by Sir Humphry Davy in 1807 in England

ANCIENT/PAST USES

• Mostly found in sodium carbonate then not used by its self in metal form

WHO FOUND IT?

• Davy was the lone deriver, but others had attempted to do the same with other elements

NAME

• Name-sodium
• Origin-English word soda
• Symbol-Na: derived from Latin word natrium

SOURCES

• Never found free in nature
• Always found in compounds
• Most commonly found in halite
• Found all over the world in compounds

ABUNDANCE

• Makes up 2.6% of the earth's crust
• 6th most abundant element on earth

PROPERTIES-PHYSICAL

• White-silver metal with wax like appearance
• Surface bright and shiny when first cut

PROPERTIES- MELTING AND BOILING POINT

• Melting point-208.1 degrees Fahrenheit
• Boiling point-1,618 degrees Fahrenheit

PROPERTIES-DENSITY AND REACTIVITY

• Density-slightly less than water, 0.968 grams per unit centimeter
• Very reactive, sometimes violent and explosive
• Reacts with oxygen, water (violently)

OTHER PHYSICAL PROPERTIES

• It's a very good conductor of electricity
• Many elements have this same property, not unique
• The reactivity of the element shows why ancient civilizations didn't use it by itself

WORTH OF ELEMENT

• Pure sodium is $25 per 100 grams

USES

• Table salt-it's part of the chemical make up of table salt
• Table salt is over consumed in the average American diet
• The actual pure metal form is generally to reactive for wide use
• Pure sodium is seen in science experiments

USES; CONT.

• Baking soda-there's 1,259 mg of sodium in 1 tsp. of baking powder
• The small amount of sodium still causes baking soda to react with water

USES

• Listing some more:
• Aspirin
• Soaps
• Baking powder
• Household lyes (Drano)

ENERGY LEVELS

• Not of sodium, but shows how energy levels are composed