Beschreibung Fire, Water, and Air: The Story of Antoine Lavoisier (Profiles in Science). Profiles the life of the Frenchman who is considered the founder of modern chemistry and biochemistry because of his discovery of oxygen and his work on combustion and respiration.
Antoine Lavoisier / Biography, Discoveries, & Facts ~ Antoine Lavoisier, prominent French chemist and leading figure in the 18th-century chemical revolution who developed an experimentally based theory of the chemical reactivity of oxygen and coauthored the modern system for naming chemical substances. He was also a leading financier and public administrator.
Antoine-Laurent Lavoisier / Science History Institute ~ Antoine-Laurent Lavoisier, a meticulous experimenter, revolutionized chemistry. He established the law of conservation of mass, determined that combustion and respiration are caused by chemical reactions with what he named “oxygen,” and helped systematize chemical nomenclature, among many other accomplishments. Scientist and Tax Collector The son of a wealthy Parisian lawyer,
Early Ideas about Matter / Chemistry / Visionlearning ~ Empedocles argued that all matter was composed of four elements: fire, air, water, and earth. The ratio of these four elements affected the properties of the matter. Stone was thought to contain a high amount of earth, while a rabbit was thought to have a higher ratio of both water and fire, thus making it soft and giving it life.
Antoine Laurent Lavoisier The Chemical Revolution ~ Antoine-Laurent Lavoisier forever changed the practice and concepts of chemistry by forging a new series of laboratory analyses that would bring order to the chaotic centuries of Greek philosophy and medieval alchemy. Lavoisier’s work in framing the principles of modern chemistry led future generations to regard him as a founder of the science. Contents. Beliefs in Chemistry at Lavoisier’s .
HISTORY OF CHEMISTRY ~ He states that all matter is made up, in differing proportions, of four elemental substances - earth, air, fire and water. Not until the arrival of a 'sceptical chemist' (the title of a book by Robert Boyle in 1661) is there a serious threat to this Greek theory of the elements. Soon an equivalently simple notion is put forward to account for the make-up of living creatures, in the theory of .
Phlogiston theory - Wikipedia ~ The phlogiston theory is a superseded scientific theory that postulated the existence of a fire-like element called phlogiston (/ f l ɒ ˈ dʒ ɪ s t ən, f l oʊ-,-ɒ n /) contained within combustible bodies and released during combustion.The name comes from the Ancient Greek φλογιστόν phlogistón (burning up), from φλόξ phlóx (flame).The idea was first proposed in 1667 by .
Henry Cavendish - Wikipedia ~ Henry Cavendish FRS (/ ˈ k æ v ən d ɪ ʃ /; 10 October 1731 – 24 February 1810) was an English natural philosopher, scientist, and an important experimental and theoretical chemist and physicist.He is noted for his discovery of hydrogen, which he termed "inflammable air". He described the density of inflammable air, which formed water on combustion, in a 1766 paper, On Factitious Airs.
A Brief History of Atomic Theory - ThoughtCo ~ It took until the end of the 18th century for science to provide concrete evidence of the existence of atoms. In 1789, Antoine Lavoisier formulated the law of conservation of mass, which states that the mass of the products of a reaction is the same as the mass of the reactants. Ten years later, Joseph Louis Proust proposed the law of definite proportions, which states that the masses of .
John Dalton and Atomic Theory / Introduction to Chemistry ~ Dalton developed the law of multiple proportions (first presented in 1803) by studying and expanding upon the works of Antoine Lavoisier and Joseph Proust. Proust had studied tin oxides and found that their masses were either 88.1% tin and 11.9% oxygen or 78.7% tin and 21.3% oxygen (these were tin(II) oxide and tin dioxide respectively). Dalton .
heat / Definition & Facts / Britannica ~ Heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder. The effect is usually an increase in the temperature of the colder body.
English Essays for Children and Students - Essay Topics in ~ We have provided various types of English essays (such as Education, India, Science & Technology, Animals, Festivals, National Days, Social Issues & Social Awareness, Personalities/People, Monuments, Relationships, Sports, Environmental Issues, Proverb, Moral Values, Nature and Essay on Health, etc) for students of lower and higher classes.
Kids science: Water - Ducksters ~ Science >> Chemistry for Kids Water is one of the most important substances on planet Earth. All forms of life need water to live. Water is constantly moving about the Earth through the water cycle. What is water? Like all "stuff", water is made up of molecules. Maybe you have heard water called H 2 O? This is actually the chemical formula for the molecule that makes up water. The H stands for .
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Joseph Priestley, Discoverer of Oxygen National Historic ~ Some 2,500 years ago, the ancient Greeks identified air — along with earth, fire and water — as one of the four elemental components of creation. That notion may seem charmingly primitive now. But it made excellent sense at the time, and there was so little reason to dispute it that the idea persisted until the late 18th century. It might have endured even longer had it not been for a free .
Wildfire - Real-time Data - USGS.gov / Science for a ~ Explore maps of current fire locations and perimeters in the conterminous 48 States and Alaska as well as view and download land-fire data sets, receive alerts and notifications. Filter Total Items: 2
About WASH / Water, Sanitation and Hygiene / UNICEF ~ WASH is the collective term for Water, Sanitation and Hygiene. Due to their interdependent nature, these three core issues are grouped together to represent a growing sector. While each a separate field of work, each is dependent on the presence of the other. For example, without toilets, water sources become contaminated; without clean water, basic hygiene practices are not possible. Water .
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Science - The New York Times ~ The latest science news and developments about space, animal behavior, plant life, the brain, genetics, archaeology, robots and climate change, along with Carl Zimmer and the weekly Science Times.
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Joseph Louis Gay-Lussac / Science History Institute ~ French chemist Joseph Louis Gay-Lussac proposed two fundamental laws of gases in the early 19th century. While one is generally attributed to a fellow countryman, the other is well known as Gay-Lussac’s law. His daring ascents in hydrogen-filled balloons were key to his investigations. Joseph Louis Gay-Lussac (1778–1850) grew up during both the French and Chemical Revolutions.
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