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Transcript of gALLIUM

Erika Kim
Gabrielle Marsala
Katie Hartwig
Grade 8
Period 7
date presenting: 5/7/10 Gallium
Ga Atomic number: 31

Atomic mass: 69.723 amu

Classification of element: metal

Group: boron group
state of matter at room temperature: solid.

Color: silvery white with bluish tinge.

Texture: solid but softens up when in the palm of your hand.

Boiling point:4,400 degrees Fahrenheit.

Hardness: softer than aluminum. Can be cut with a knife or scratched with your fingernail.
Melting Point: 86 degrees Fahrenheit.

Reactivity: reacts with both acids and alkalis.
Combines with most metals when
heated to high temperatures.

Has lower vapor pressure at high temperatures.

Is capable of converting electricity directly into light.

When It is finley cut it loses its luster and soon looks dull.

Plants absorb small amounts of gallium from the soil in which they grow.

The current price of 1 gram of gallium of 99.9999% purity seems to be at about US $15.00.

Gallium is not toxic and can produce skin rashes and decrease production of blood cells. Some interesting facts on gallium are: Gallium was predicted to be existent by Dimitri Mendeleev in 1871. He predicted that gallium was an element with similar properties to Aluminum.
In 1875, a man named Paul-Emile Lecoq de Boisbaudran discovered Gallium in France. He discovered the element spectroscophically which is a tool used to produce and observe a spectrum of light or radiation.
In many cases, Gallium was known to be found in coal. Modern uses for the element Gallium
include being used in byproducts of fuel,
diaspore (a plant dispersal unit), and germanite (a mineral).
IGallium is also a semi conductor, which can conduct minimal amounts of electricity. gallium was and still is used in high termperature thermometers

Gallium is mixed with ammonium to create gallium-sulfate. The picture is an example of Gallium melting at room temperature, as well as what the element square looks like. This element was discovered in France. This is Paul-Emile Lecoq de Boisbaudran,
who discovered this element. It was Dmitiri Mendeleev who predicted
that there was an element that existed that was like gallium.
This is a picture of gallium expanding when on glass. This is when Gallium melts
on your hand because the body
temperature is higher than the melting
point of gallium Gallium in its pure form
Full transcript