Urainum

Uraium, U
webelements.com

Physical Properties:Is a silver -white metallic chemical element it has 92 protons It can also have about 141 and 146 neutrons, urainum has the highest atomic weight of the naturally occuring elements
Boiling point:4404 K
Melting point:1405.3
Density:17.3g.cm-3
Phase:solid

Urainumas discover by a German scieties named Martin Klaprothy in 1789. Uranium is the last heaviest of the natural elements.The ownership and sale of uranium are stricty controlled by the U.S. Nuclear Regulatory Commission.It is now found in many menerals, including pitchblende. uranite, "yellow cake", and manazite sands.
Christian m, Domenech

mercury (Hg)

Mercury (Hg)

webelements.com

Physical properties:
Density:13.59 g/cm3

Boiling point:365.6 'c

Freezing point:-38.85 'c

Mercury has 80 protons and 121 neutrons

Background: Mercury was discovered in about the 15th or 16th century B.C. It was found in an egyptian tomb at Kurna. The Greek philosopher Theophrastus had described a method for preparing mercury.

Uses for this element: The most commen use for this element is for making chlorine, and the second most commen use for it is,in switches in electrical applications.

by: Joseph Ard

Strontium(Sr)

Strontium(Sr)
webelements.com

Physical properties
Melting Point: 777'C
Boiling Point: 1382'C
Density: 2.6 g/cm3
Phase: Solid


Plans for the future is to be in the fireworks on the forth of july.

Background: (Where and when it was discovered?)

Strontium was first recognized in 1790 by Irish physician Adair Crawford. The element was not prepared in pure form until 20 years later by a chemist Humpry Davy. It is used for production of color television tubes and in some kind of fireworks to give the color red. It is named after Strontian; a village in Scotland where it was discovered. It has 38 protons and electrons, and 50 neutrons. It has an atomic mass of 38.

By: Talia Santos.

Gold (Au)

Gold (Au)


http://webelements.com/gold/




Phyiscal properties; gold can be used for anything such as: jelwery, coins etc.





Melting point; 1337 k





Boiling point; 3081 k





Density; 19.31 g/cm3





Protons; 79 Neutrons; 118





Phase: solid at room temperature , when melted is a liquid.











Background;Gold (pronounced /ˈɡoʊld/) is a chemical element with the symbol Au (Latin: aurum) and an atomic number of 79. It has been a highly sought-after precious metal for coinage, jewelry, and other arts since the beginning of recorded history. The metal occurs as nuggets or grains in rocks, in veins and in alluvial deposits. Gold is dense, soft, shiny and the most malleable and ductile pure metal known. Pure gold has a bright yellow color and luster traditionally considered attractive, which it maintains without oxidizing in air or water. It is one of the coinage metals and formed the basis for the gold standard used before the collapse of the Bretton Woods system in 1971.









YANIZ YANEZ

silver (Ag)

Silver (Ag)
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Silver was considered the most valuable of all metals. Ancient people would use silver to make tools. They also used it as money. They also use silver for jewelry.

Silver's atomic number is 47 so there are 47 positively charge protons there are 47 negatively. Silver is a raremetal and make up very little of earth's crust.

Luis Godoy

Iodine (I)

Iodine (I)


http://webelements.com/iodine/




Physical properties; Iodine is a voliet vapor when heated. Also used for medince to heal the sick and help you get stronger.





Melting poing; 113.7'c


Boiling point; 184.3'c


Phase; solide Color; slate gray


Density; 4.94 g/cm3


Background; Iodine and its compounds are primarily used in medicine, photography, and dyes. Iodine is rare in the solar system and Earth's crust. The iodides are very soluble in water, and the element is concentrated in seawater. This mechanism helps to explain how the element came to be required in trace amounts by all animals and some plants, being the heaviest element commonly used by living organisms (only tungsten, used in enzymes by a few bacteria).





Jenneh H. Sheriff

Cadmium (Cd)

Cadmium, Cd
http://webelements.com/cadmium/

Physical Properties
Boiling Point:1040 K,
Melting Point:594.22 K,
Density:8.65 g.cm
Protons:48
Neutrons:64
Electrons:-48
Atomic Mass:11.41






Cadmim is a transition metal. It comes from "Cadmia", the latin word used for ineral calamine. Cadmium is a soft and silvery metal. Cadmium is poisnous and is mostly found in ores of zinc. Cadmium is used in the manufacture of nickel-cadmium(Nicad) batteries which can be recharged repeatly. Cadmium was discovered in 1817 by Friedrich Stroneyer. Whenit grows up it wants to be used in fireworks.

Chris Forrest Jr.

tungsten

Tungsten Facts

The atomic number of tungsten is 74 atomic mass is also known as the weight of the element for example tungsten my element weights 183.85 mass unit whats yours?.elements are all kinds of things solids,liquids,gas's but tungsten is a solid it looks like silver or metal as u can see the picture in top.the melting point is ofcource the point wher it melts tunsten melts at 3,140 degrees c thats the highest of any metal in the element chart.The boiling point is wher it boiles is 5,530 degrees c.

Omar Barrientos

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Tin (sn)

Tin (Sn)

Physical properties.
Phase- solid.
Density(near r.t.)- (white) 7.365 gcm-3.
Density(near r.t.)- (gray) 5.769 gcm-3.
Melting point- 505.08k, 231.93 degree C, 449.47 degree F.
Boiling point- 2875k, 2603 degree C, 4716 degree F.

Tin's Antiquity

Tin is one of the earliest metal known. Late Stone Age metal-workers discovered that putting
a small amount of tin, about 5%, in molten copper produced an alloy called bronze that was easier to work and much harder than copper. In 1931 the tin producers founded the international tin committee, followed in 1956 by the international tin council, an institution to control the tin market. After the collapse of the market in October 1985 the price for tin nearly halve.

Uses for tin.

Tin is used for coating lead or zinc and steel to prevent corrosion. Window glass is most often made via floating molten glass on top of molten tin (creating float glass) in order to make a flat surface (this is called the "Pilkington process"). Tin has long been used as a solder in the form of an alloy with lead, tin comprising 5 to 70% w/w. Tin forms a eutectic mixture with lead containing 63% tin and 37% lead. Such solders are primarily used for solders for joining pipes or electric circuits.

Martin Moreta and Marco Gutierrez

Zirconium (Zr)

Zircoium, Zr

http://www.webelements.com/zirconium/

Physical Properties

• Boiling Pointing: 46.82 k
  Melting Point: 21.28k
  Phase: Solid
• Density: 6.52g/cm3

BackGround
(Who discovered and When)

John Jacob made fairly pure Zirconium in 1824.

Zircoium is a chemical element with the symbol Zr, am atomic number 40.
It's a lustrous , gray-white strong transition metal that resembles Titanium.
Zirconum is used to as an alloying agent due to its high resistance to Corrusion.
Zirconium is one of the transition metals.
An important use of zirconium is in nuclear power plants.
The future of Zircoinum its use as an advanced ceramic

Search by: Natalia Justiniano.

seaborgium

Seaborgium (Sg)

Physical Properties

Melting point: unknown

Boiling point: unknown

Density @ 293 K: unknown

Atomic mass: (263.o) amu

Seaborgium was discovered in 1974 by Albert Ghiorso. It was named after 191 Nobel Peace prize winnder Glenn Seaborg.Only a few seaborgium. This is done by bombarding californium with oxygen nucler. The only resaerch that has been done the element used a sample consisting of only seven atoms.

Francium (Fr)

Francium, Fr

webelements.com

Physical Properties

Boiling point: 950 K

Melting point: 300 K

Phase: solid @ room temperature

Density: 1.87 g/cm3

Background

(Who Discovered this Element? When?)

Francium is the least stable of the naturally occurring elements: its most stable isotope, francium-223, has a maximum half-life of only 22 minutes. In contrast,astatine, the second-least stable naturally occurring element, has a maximum half-life of 8.5 hours. All isotopes of francium decay into either astatine, radium, or radon. Francium is also less stable than all synthetic elements up to element 105.

Uses for this element

Due to its instability and rarity, there are no commercial applications for francium. It has been used for research purposes in the fields of biology and of atomic structure. Its use as a potential diagnostic aid for various cancers has also been explored but this application has been deemed impractical.

research by CJMcDonald

silver (Ag)

silver was considerod the most valuable of all metals. Silver atomic number is 47 so there are positively charge protons there are 47 negatively. silver is a rare metal and make up very little of earth's crust.

Bromine(BR)

BROMINE(BR)

phase:Liquid

Density(3.1028g.cm3)

Melting Point(265.8k,7.2c, 19f)

Bromine was discovered inependenly by two chemist. "Antoine balard" and Carl Jacob Lowig". In 1825-1826 Balard found Bromide salts in the ash of see weed. Bromine is the only liquid at room temperature.

BY

HASSAN S.

Cadmium (cd)