Elements
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PRESENTATION OUTLINE
Potassium
It is named for a salt, potassium salt to be specific
ABOUT ITS BLOCK
- Symbol K from Latin kalium, meaning alkali
- Atomic number 19
- Atomic mass 39.098
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It is a solid metal, located in family 1 and period 4
HUMPHRY DAVY
THE MAN WHO DISCOVERED POTASSIUM IN 1807
POTASSIUM IS USED IN
- Soaps
- Glass
- Fertilizer
It has 2 isotopes, which are 40K and 41K. And its oxidation state is 1
It is the 7th most abundant element, and is located in rocks. Small amounts can also be found in the ocean
FACTS ABOUT POTASSIUM
- Makes up about 1.5% of the earths crust
- Explodes with water, with purple flame
- Low potassium levels can result in diabetes 7th most abundant element
GOLD
Named for its color
ABOUT ITS BLOCK
- Symbol Au for the Latin of gold
- Atomic number 79
- Atomic mass 196.966
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It is a solid metal in family 11, period 6
GOLD IS USED IN
- Rings
- Earrings
- Necklaces
- And other jewelry
It has no isotopes, and cannot oxidize. It is a very tough metal
Gold is very rare, because it's hard to reproduce. It can be found in rocks and the ocean
THESE FACTS ARE GOLDEN
- Most gold came from a rock that hit earth millions of years ago
- There is about 25 tons of gold in 1 cubic mile of ocean, but there is no economic way to retrieve it
- The largest gold nugget ever found was 195 pounds, and it was found in California
OXYGEN
It is named for the Greek oxy genes meaning acid forming
ABOUT THE BLOCK
- Symbol O for the first letter of its name
- Atomic number 8
- Atomic mass 15.999
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It is a gaseous nonmetal, in family 16 and period 2
CORNELIUS DREBBEL
THE MAN CREDITED WITH DISCOVERING OXYGEN
OXYGEN IS USED IN
- Air (duh)
- Antifreeze
- The Steel Industry
Its isotopes are 16o, 17o, and 18o. It has 2 oxidation states, which are -1 and -2
Oxygen is very common and is found in the atmosphere and living organisms such as humans
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FACTS TO TAKE YOUR BREATH AWAY
- Liquid oxygen is pale blue
- Liquid oxygen is at about -297.3 degrees Fahrenheit
- About 300 million years ago, when oxygen levels were 35 percent, insects were Abe to grow gigantic. Think dragonflies the size of hawks
