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Area: Science Visit Natural

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This time we break down one of the areas of participation in Expo Science, these are the Natural Sciences, which covers projects related to mathematics, physics, chemistry and all its derivations.

Chemistry: Science that studies the composition, structure, properties and reactions of matter, especially of atomic and molecular systems.
Behavioral and Social Sciences: A study of thought processes and behavior of humans and other animals in their interactions with the environment. • Analytical Chemistry • General Chemistry • Inorganic Chemistry • Organic Chemistry • Industrial Chemistry Mathematics

: Study of the extent, characteristics and relationships of quantities and systems, using numbers and symbols. Deductive study of numbers, geometry, abstract constructions or structures. • Algebra • Analysis • Geometry • Probability and Statistics

Physics: The science of matter, energy and their interactions with each other. Magnetism and Electromagnetism • Classical Astronomy • Physics (Mechanics, Thermodynamics, Optics, Electromagnetism) • Biophysics: Physical study of biological processes • Instrumentation (exact measurement systems) • particle nuclear physics: the notably related to the nature of matter and nuclear

Earth and Planetary Science: The study of sciences related to the planet (geology, mineralogy, physiography, oceanography, meteorology, climatology, caving, geography, atmospheric sciences, etc. .).


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SALES OXISALES

OXISALES (neutral salts) neutral salts (OXISALES) ternary compounds are formed by a non-metal, oxygen and metal. Total are obtained by neutralization of a hydroxide on oxoacids acid. The reaction that takes place is: oxoacids ACID + HYDROXIDE -> SAL NEUTRAL + Agualada complete neutralization of acid by base involves the replacement of all hydrogen ions by acid cation hydroxide, water also formed in the reaction. It can therefore be considered as binary compounds formed by a cation (from the base) and an anion (from the acid). The formula is written first and then the anion cation. By reading the order followed the formula is the name inverso.Para neutral salts, just use the name of the corresponding anion and add the name of the cation, as noted above anteriormente.Si the anion has subscript, can be expressed with multiplicative prefixes bis , tris, tetrakis, pentakis, etc. However, if the metal valence states are not accurate these prefixes, it is sufficiently clear nomenclature compuesto.___________________





ACIDS Hidrácidos
H + NO METAL
F (-1) Cl (-1) Br (-1) i (-1) S (-2)
H (+1) F (-1) HF AC HYDROFLUORIC
H2 (+ 1) S (-2) sulfide H2S AC
Oaxaca
H + radical oxygenated
NO2 (-1) nitrite radical
NO3 (-1) nitrate radical
SO2 (-2) HIPOSULFITO
radical SO3 (-2) sulfite radical
SO4 (-2) SULFATE
radical CO3 (-2) carbonate radical
PO3 (-3) phosphite radical
PO4 (-3) phosphate radical radical

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ACID
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AC HNO2 nitrous oxide
AC AC HIPOSULFUROSO
HNO3 H2SO2 H2SO3 sulfurous

AC AC AC
H2SO4 sulfuric dioxide H2CO3
AC MATCHES AC
H3PO4 H3PO3 phosphoric

METAL HYDROXIDES hydroxyl radicals
Na + (+1) K (+1) Li (+1) Cu (+1) Ag (+1)
Mg (+2) Zn (+2) Cu (+2) Fe (+2)
Fe (+3) Al (+3)
Na (+1) OH (-1) SODIUM HYDROXIDE SALTS

hydrosalts
HCl (hydrazide) chloric acid (H is changed metal) SODIUM CHLORIDE NaCl
NAME NO NAME + METAL + METAL URO
OXISALES
HNO2 eg Na (+1) NO2 (-1) sodium nitrite
NAME OF NAME OF METAL RADICAL +

IONIZATION AC ( aq) H (1 +) hydrogen radical + 1 - (aq)
hydroxide (aq) metal (aq) No. of ox + OH1-(aq)
Sales metal + radical

1 mol 6.02 23 x 10
1 mol (g) 22.4 liters

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HYDRIDES

binary hydrides are compounds formed by atoms of hydrogen and another element, and there are three types: metal hydride , hydracids Acids and Volatile Hydrides. How
made? Metal Hydride

To make metal hydrides is written first symbol of the metal, below the symbol of hydrogen (H) and then the valence of the metal. Formula: XHn

hydrohalic acids acids to make hydracids is written first symbol of Hydrogen (H) below the valence non-metal and past the command sulfur, selenium, tellurium, fluorine, chlorine, bromine or iodine. Formula: XnH
Hydrides VolatilesPara make volatile hydrides first write command nitorgeno, phosphorus, arsenic, antimony, boron, carbon or silicon, below the symbol of hydrogen (H) and then the non-metal valence correspondiente.Fórmula:

XHn How are they named? Metal Hydride

come from the combination of hydrogen and a metal. If the metal is combined with having a single valence are named by the words Hydride, and the name of the metal that is combined. In other nomenclatures Like the oxides, the only thing that instead of oxide hydride is placed.

Examples: Traditional / Stock / Systematics. ------------------------------------- CaH2
Hydride Calcium / Hydride Calcium / Calcium dihydride .
--------------------------------------- NaH Sodium Hydride / Sodium Hydride / Hybrid Sodium.

If the metal with which combined has two valences, it becomes like that of a valence metal but the name just a bear when she performs with lower valence and ico when acting with the valence greater and was removed prefix.

Examples: ------------------------------------- FeH3
ferric hydride. ------------------------------------- FeH2
Hydride ferrous.

hydrohalic acids are binary combinations between the hydrogen and the following non-metals:
Element Element


Valencia Valencia 2

Sulphur

1
Fluorine Chlorine Bromine


Selenium Tellurium Iodine

hydracids Acids are named only in the traditional nomenclature and systematics, and not in the Sock. Traditional

are named with the word acid followed by the name of nonmetal ending in water.
Examples: -------------------------------------
hydrochloric acid HCl. Hydrogen Sulfide H2S
-------------------------------------. Systematic

are named first putting the name of uro not finish metal. and continues with the words of hydrogen.
Examples: -------------------------------------
HCl hydrogen chloride. H2S
hidrógeno.Hidruros ------------------------------------- Volatile Sulfide
combinations are hydrogen with the following chemical elements, and contain the following valences:
Element Symbol

Valencia

N Nitrogen Phosphorus
3

P

As
Arsenic Antimony Sb

Boro

B C
Carbon Silicon
4

If
The volatile hydrides are named in the scheme, rather than the traditional Tien a special name for each ello, and are indicated in this table:

Formula Common Name Systematic


NH3 Ammonia Nitrogen
Trihidruro
PH3 Phosphine

Trihidruro phosphorus
Arsine AsH3

Trihidruro arsenic
SbH3
stibnite antimony
Trihidruro
BH3
Boran
Trihidruro boron

CH4 Methane Carbon
Tetrahidruro
SiH4
Silan
Tetrahidruro
Los silicon hydrides are not volatile nombre en la Stock.