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Group 5A

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by

Shana Nissan

on 4 February 2011

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Transcript of Group 5A

Group 5A Nitrogen Phosphorus Bismuth By: Shana Nissan & Joseph Cohen Antimony Antimony is used in electronics
because it is a good conductor. Physical Properties
atomic mass: 30.97
density: 1.82 g/cm3
boiling point: 280 degrees celcius
description:
soft white waxy solid,
brownish-red powder
or black solid. Chemical Properties
Phosphorus is highly reactive
There are several forms of phosphorous: white, red and black phosphorous
Some forms like white phosphorus react with oxygen
For safety precautions, Phsophorus is stored in water
in laboratories
Phosphorus combines easily with the halogens
Phosphorus also combines with metals to form compounds
known as phosphides

Phosphorous is obtained primarily from
phosphorous rock, can also be obtained from urine. The discovery of phosphorous is credited to a German merchant, Henning Brand, who discovered it through distilling urine. Practical use: it is used
in matches because phosphorous
is highly flammable. Physical Properties:
silvery white, shiny element that resembles a metal
hard and brittle
can be a black powder
melting point: 630 degrees celcius
boiling point: 1635 degrees celcius
density: 6.68 g/cm3
metalloid Chemical Properties:
relatively active
does not combine with oxygen at room temp.
does not react with cold water or most cold acids
does dissolve in hot acids Antimony is typically found in nature as sulfide mineral stibnite, it is extracted The discovery of Antimony is credited to Basil Valentine of Germany. Phosphorus! Antimony! Nitrogen! Antimony! Daniel Rutherford was first to
publish his discovery of nitrogen
in 1772. Physical properites:
It is a relatively inert gas
It is colorless, odorless and
tasteless
Liquid nitrogen is also colorless
and odorless, and is similar
in appearance to water
Melting point : -210 °C
Boiling point : -195.8 °C

At high temperatures it will combine
with certain active metals to form nitrides
It is non flammable and will not
support combustion. Chemical Properties: Nitrogen makes up about 78% of the atmosphere Nitrogen is produced commercially
almost exclusively from air, most
commonly by the fractional
distillation of liquid air.


Nitrogen is commonly used for
the production of ammonia. Bismuth! Claude Geoffroy the Younger is credited
with the discovery of Bismuth in 1753. Physical Properties:
Boiling Point: 1837K
Melting Point: 544.67K
Soft, silvery metal with a bright,
shiny surface and a yellowish
or pinkish tinge






Chemical Properties:
Bismuth is not reactive with Oxygen
At higher temperatures, the metal burns
to form bismuth oxide.
Bismuth reacts with most acids Bismuth is obtained primarily from crystals. Bismuth is an active ingredient
in Pepto-Bismol. 5A
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