Chemistry, a branch of physical science, is the study of the composition, properties and behavior of matter. Chemistry is concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds.
Chemistry is also concerned with the interactions between atoms (or
groups of atoms) and various forms of energy (e.g. photochemical
reactions, changes in phases of matter, separation of mixtures,
properties of polymers, etc.).
Chemistry is sometimes called "the central science" because it bridges other natural sciences like physics, geology and biology with each other.[3][4] Chemistry is a branch of physical science but distinct from physics.[5]
The etymology of the word chemistry has been much disputed.The genesis of chemistry can be traced to certain practices, known as alchemy, which had been practiced for several millennia in various parts of the world, particularly the Middle East.
Cet ouvrage regroupe les corrigés des exercices réunis dans le manuel de
Chimie des solides, publié chez EDP Sciences. La plupart des sujets propo-sés présentent un aspect pratique. C’est le cas, en particulier, de la ther-modynamique, discipline appliquée à la synthèse d’oxydes complexes et aux.

http://www.4shared.com/office/V9M6CvkJ/Exercices_de_chimie_des_solide.html?
Chemistry is sometimes called "the central science" because it bridges other natural sciences like physics, geology and biology with each other.[3][4] Chemistry is a branch of physical science but distinct from physics.[5]
The etymology of the word chemistry has been much disputed.The genesis of chemistry can be traced to certain practices, known as alchemy, which had been practiced for several millennia in various parts of the world, particularly the Middle East.
Etymology
Main article: Chemistry (etymology)
The word chemistry comes from the word alchemy, an
earlier set of practices that encompassed elements of chemistry,
metallurgy, philosophy, astrology, astronomy, mysticism and medicine; it
is commonly thought of as the quest to turn lead or another common
starting material into gold.
Alchemy, which was practiced around 330, is the study of the
composition of waters, movement, growth, embodying, disembodying,
drawing the spirits from bodies and bonding the spirits within bodies (Zosimos).
An alchemist was called a 'chemist' in popular speech, and later the
suffix "-ry" was added to this to describe the art of the chemist as
"chemistry".
The word alchemy in turn is derived from the Arabic word al-kīmīā (الكيمياء). The Arabic term is borrowed from the Greek χημία or χημεία. This may have Egyptian origins. Many believe that al-kīmīā is derived from χημία, which is in turn derived from the word Chemi or Kimi, which is the ancient name of Egypt in Egyptian.Alternately, al-kīmīā may be derived from χημεία, meaning "cast together".
Definition
In retrospect, the definition of chemistry has changed over time, as
new discoveries and theories add to the functionality of the science.
The term "chymistry", in the view of noted scientist Robert Boyle in 1661, meant the subject of the material principles of mixed bodies.
In 1663, "chymistry" meant a scientific art, by which one learns to
dissolve bodies, and draw from them the different substances on their
composition, and how to unite them again, and exalt them to a higher
perfection - this definition was used by chemist Christopher Glaser.
The 1730 definition of the word "chemistry", as used by Georg Ernst Stahl,
meant the art of resolving mixed, compound, or aggregate bodies into
their principles; and of composing such bodies from those principles.In 1837, Jean-Baptiste Dumas considered the word "chemistry" to refer to the science concerned with the laws and effects of molecular forces.
This definition further evolved until, in 1947, it came to mean the
science of substances: their structure, their properties, and the
reactions that change them into other substances - a characterization
accepted by Linus Pauling.
More recently, in 1998, the definition of "chemistry" was broadened to
mean the study of matter and the changes it undergoes, as phrased by
Professor Raymond Chang.
History
Main article: History of chemistry
Ancient Egyptians pioneered the art of synthetic "wet" chemistry up to 4,000 years ago.
By 1000 BC ancient civilizations were using technologies that formed
the basis of the various branches of chemistry such as; extracting metal
from their ores, making pottery and glazes, fermenting beer and wine,
making pigments for cosmetics and painting, extracting chemicals from
plants for medicine and perfume, making cheese, dying cloth, tanning leather, rendering fat into soap, making glass, and making alloys like bronze.
The genesis of chemistry can be traced to the widely observed phenomenon of burning that led to metallurgy—the art and science of processing ores to get metals (e.g. metallurgy in ancient India).
The greed for gold led to the discovery of the process for its
purification, even though the underlying principles were not well
understood—it was thought to be a transformation rather than
purification. Many scholars in those days thought it reasonable to
believe that there exist means for transforming cheaper (base) metals
into gold. This gave way to alchemy and the search for the Philosopher's Stone which was believed to bring about such a transformation by mere touch.
Greek atomism dates back to 440 BC, arising in works by philosophers such as Democritus and Epicurus. In 50 BC, the Roman philosopher Lucretius expanded upon the theory in his book De Rerum Natura (On The Nature of Things).
Unlike modern concepts of science, Greek atomism was purely
philosophical in nature, with little concern for empirical observations
and no concern for chemical experiments.
Much of the early development of purification methods is described by Pliny the Elder in his Naturalis Historia.
A tentative outline is as follows:
- Alchemy in Greco-Roman Egypt [ – 642 CE], the earliest Western alchemists such as Mary the Jewess, Cleopatra the Alchemist, and Zosimos of Panopolis described early laboratory equipment. They are estimated to have lived between the first and third centuries.
- Islamic alchemy [642 CE – 1200], the Muslim conquest of Egypt; development of alchemy by Jābir ibn Hayyān, al-Razi and others; Jābir modifies Aristotle's theories; advances in processes and apparatus.
- European alchemy [1300 – present], Pseudo-Geber builds on Arabic chemistry.[citation needed] From the 12th century, major advances in the chemical arts shifted from Arab lands to western Europe.
- Chemistry [1661], Boyle writes his classic chemistry text The Sceptical Chymist.
- Chemistry [1787], Lavoisier writes his classic Elements of Chemistry.
- Chemistry [1803], Dalton publishes his Atomic Theory.
- Chemistry [1869], Dmitri Mendeleev presented his Periodic table being the framework of the modern chemistry
The earliest pioneers of chemistry and the scientific method,[26] were medieval Arab and Persian scholars. They introduced precise observation and controlled experimentation into the field and discovered numerous chemical substances.
"Chemistry as a science was almost created by the Muslims; for in this field, where the Greeks (so far as we know) were confined to industrial experience and vague hypothesis, the Saracens introduced precise observation, controlled experiment, and careful records. They invented and named the alembic (al-anbiq), chemically analyzed innumerable substances, composed lapidaries, distinguished alkalis and acids, investigated their affinities, studied and manufactured hundreds of drugs. Alchemy, which the Muslims inherited from Egypt, contributed to chemistry by a thousand incidental discoveries, and by its method, which was the most scientific of all medieval operations."
The most influential Muslim chemists were Jābir ibn Hayyān (Geber, d. 815), al-Kindi (d. 873), al-Razi (d. 925), al-Biruni (d. 1048) and Alhazen (d. 1039). Their works became more widely known in Europe in the twelfth and thirteenth centuries, beginning with the Latin translation of Jābir's Kitab al-Kimya in 1144. The contribution of Indian alchemists and metallurgists in the development of chemistry was also quite significant.
For some practitioners alchemy was an intellectual pursuit, and over time they got better at it. Paracelsus
(1493–1541), for example, rejected the 4-elemental theory, and with
only a vague understanding of his chemicals and medicines formed a
hybrid of alchemy and science in what was to be called iatrochemistry. Similarly, the influences of philosophers such as Sir Francis Bacon (1561–1626) and René Descartes (1596–1650), who demanded more rigor in mathematics and in removing bias from scientific observations, led to a scientific revolution. In chemistry this began with Robert Boyle (1627–1691) who came up with an equation known as Boyle's Law about the characteristics of gaseous state.
Chemistry came of age when Antoine Lavoisier (1743–1794) developed the theory of Conservation of mass in 1783; and the development of the Atomic Theory by John Dalton around 1800. The Law of Conservation of Mass resulted in the reformulation of chemistry based on this law[citation needed]
and the oxygen theory of combustion, which was largely based on the
work of Lavoisier. Lavoisier's fundamental contributions to chemistry
were a result of a conscious effort[citation needed] to fit all experiments into the framework of a single theory.
Lavoisier established the consistent use of the chemical balance, used oxygen to overthrow the phlogiston theory,
and developed a new system of chemical nomenclature and made
contribution to the modern metric system. Lavoisier also worked to
translate the archaic and technical language of chemistry into something
that could be easily understood by the largely uneducated masses,
leading to an increased public interest in chemistry. All these advances
in chemistry led to what is usually called the chemical revolution.
The contributions of Lavoisier led to what is now called modern
chemistry—the chemistry that is studied in educational institutions all
over the world. It is because of these and other contributions that Antoine Lavoisier is often celebrated as the "Father of Modern Chemistry". The later discovery of Friedrich Wöhler that many natural substances, organic compounds, can indeed be synthesized in a chemistry laboratory also helped the modern chemistry to mature from its infancy.
The discovery of the chemical elements has a long history from the days of alchemy and culminating in the creation of the periodic table of the chemical elements by Dmitri Mendeleev (1834–1907)[34] and later discoveries of some synthetic elements.
Jöns Jacob Berzelius, Joseph Priestley, Humphry Davy, Linus Pauling, Gilbert N. Lewis, Josiah Willard Gibbs, Robert Burns Woodward, and Fritz Haber also made notable contributions.
The year 2011 was declared by the United Nations as the International Year of Chemistry.
It was an initiative of the International Union of Pure and Applied
Chemistry, and of the United Nations Educational, Scientific, and
Cultural Organization and involves chemical societies, academics, and
institutions worldwide and relied on individual initiatives to organize
local and regional activities.
source : en.wikipedia.org
source : en.wikipedia.org
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Cet ouvrage regroupe les corrigés des exercices réunis dans le manuel de
Chimie des solides, publié chez EDP Sciences. La plupart des sujets propo-sés présentent un aspect pratique. C’est le cas, en particulier, de la ther-modynamique, discipline appliquée à la synthèse d’oxydes complexes et aux.
http://www.4shared.com/office/V9M6CvkJ/Exercices_de_chimie_des_solide.html?
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