Arsenic

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by 201431980NPS
Last updated 5 years ago

Discipline:
Science
Subject:
Chemical Elements
Grade:
6

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Arsenic

Arsenic ASMetalloid

Arsenic gets it's name from a Persian word for yellow pigment now known as orpiment.

orpiment

Protons:33Electrons:33Neutrons:42

h

OF ARSENIC

SMELLS LIKE GARLIC WHEN YOU HEAT IT UP

Arsenic was discovered by Albertus Magnus approximately in 1250. *Dentists used arsenic to kill nerves*Miners use arsenic to mine gold*Arsenic is in rat poisons*Organoarsenic is used as treatment for a variety of diseases*Arsenic is used in wood preservatives*Arsenic is in some glasses Boiling point: 616 CelsiusMelting point: 817 CelsiusDensity: 5.75Solid in room temperature

Arsenic is a natural element which behaves like a metal. It is present in the environment both naturally and due to certain human activities. It has many different forms. It can exist in inorganic or organic form, but inorganic arsenic being generally considered more toxic.

Arsenic's two most common allotropes (allotropes are different structures of the same element) are yellow and metallic gray. Gray arsenic is a brittle shiny solid. Yellow arsenic is soft and waxy. Yellow arsenic is reactive and very toxic. It converts to gray arsenic when exposed to light at room temperatures. Another allotrope is black arsenic.

ReactsWith hydrogen: Makes arsine, arsine is a very toxic gas that is denser than air. When arsine is heated, it breaks down to arsenic and hydrogen.With oxygen: The surface of the metalloid becomes black. When heated in oxygen gas, arsenic binds with oxygen to form, arsenious oxide.With halogens: Arsenic reacts well with halogens with the exception of astatine. Arsenic with bromine gas forms a light yellow solid called arsenic tribromide.With water: Pure arsenic is insoluble in water; however, many arsenic compounds dissolve easily in water.

Albertus Magnus


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