Copper (Cu, Cuprum)

Copper (Cu, Cuprum)

Copper - a chemical element, known since ancient times.The name «cuprum» associated with the name of the Greek island of Cyprus, and the Romans at the time called "the metal from Cyprus» «cuprium aes».The fact that this item refers to the vital ...

Molybdenum (Mo, Molybdenum)

Molybdenum (Mo, Molybdenum)

chemical properties Molybdenum was discovered by the Swedish chemist K. Scheele in 1778.At ordinary temperature in the air it is fairly stable.Oxidation occurs when t 400º.Since hydrogen is not reacted until melting.Fluoride acts on it in th...

Sodium (Na, Natrium)

Sodium (Na, Natrium)

Table salt NaCl known since antiquity, and the name "sodium" (Greek. «Nitron) initially attributed to natural soda.But the silver-white soft metal was obtained only in 1807 by chemist H. Davy.In the United States, Britain and France, it is calle...

Nickel (Ni, Niccolum)

Nickel (Ni, Niccolum)

metal was produced in 1751 by the Swedish chemist A. Cronstedt.The name comes from the mineral kulfernikelya (it. Nickel - mountain spirit, kupfer - copper). chemical properties The compounds exhibit a variable valence metal is average acti...

Selenium (Se, Selenium)

Selenium (Se, Selenium)

Selenium was discovered in 1817 scientists Berzelius.Translated from the Greek.«Selene» means "moon."For a long time this element is considered a poison, and only in 60-ies of XX century, researchers have proved the role of selenium in selenodef...

Sulfur (S, Sulphur)

Sulfur (S, Sulphur)

Sulfur is an element of group 16, atomic number 16. The oxygen and hydrogen compounds it is composed of ions, salts and acid forms.More man has long been familiar stench of hydrogen sulfide, sulfur dioxide suffocating effect and the smell of bur...

Phosphorus (P, Phosphorus)

Phosphorus (P, Phosphorus)

Phosphorus is a trace element acidic.Its name is from the Greek.means "light bringer."It is about 0.9% of the mass of our planet, in the human body is in an amount of 500-800 grams, with 85% accounted for bone and tooth tissue. Phosphorus does ...

Fluorine (F, Fluor)

Fluorine (F, Fluor)

Fluorine is highly toxic.According to the physical properties of a pale yellow gas is very aggressive and reminds both chlorine and ozone.Translated from the Greek.It means "destruction."This name is associated with many scientists trying to iso...

Chlorine (Cl, Chlorine)

Chlorine (Cl, Chlorine)

Most of us associate with the substance chlorine for water treatment.But apart from the characteristic odor and disinfect doorknobs and floors, chlorine, it turns out, it has a positive effect on the human body.How does this happen? the first t...

Chromium (Cr, Cromium)

Chromium (Cr, Cromium)

Chrome - a chemical element of group VI atomic number 24. It was opened by Louis Nicolas Vauquelin (1797).Translated from the Greek.«Chroma» means "paint color" (because of the different color of chromium compounds). adult human body contains a...

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