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Antoine Lavoisier and the Law of Conservation of Mass

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Aaron Kohn

on 26 October 2012

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Transcript of Antoine Lavoisier and the Law of Conservation of Mass

Born on August 26, 1743
Educated at the College des Quatre Nations
At first he practiced law, but later found that he liked science more and ended up studying chemistry
Died May 8, 1794
Branded a traitor and guillotined.
"It took them only an instant to cut off his head, but France may not produce another such a head in a century."
-Joseph Louis Lagrange Antoine Lavoisier Antoine Lavoisier John Dalton Antoine Lavoisier
The Law of Conservation of Mass
By Ethan P. and
Aaron K. The Law of Conservation of Mass -This law states that the amount of mass in the reactants is equal to the amount of mass in the products. So, no mass is ever lost or gained in a chemical reaction.
-This changed chemistry from being qualitative to more quantitative.
-Antoine Lavoisier was the first to fully explain the concepts of the Law of Conservation of Mass.
Fun facts about Antoine Lavoisier John Dalton Born on September 6, 1776 in Eaglesfield, England
Died on July 26, 1844 in Manchester, England
Died from multiple strokes throughout his life and falling out of bed at the age 77.
"Dalton made atoms scientifically useful,"
Rajkumari Williamson Jones Fun Facts about John Dalton - Known as "Father of Atomic Theory"
- In the Atomic Theory Dalton said that all atoms of a single element had a given mass and set properties.
- Spoke Latin and Greek
- At 12 years old was the headmaster of a Quaker School
- He was red-green color blind along with his brother. He theorized that because both him and his brother were color blind that it must be hereditary.
-1803 He discovered the Law of Partial Pressure
-1803 Dalton created the first chart of atomic weights.
From 1817 to the time of his death, Dalton served as president of the Manchester Literary and Philosophical society.
- Never married Joseph Proust Joseph Proust Born September 26, 1754 in France
Died July 5, 1826
Napoleon invaded Spain, set fire to Proust's lab and forced Proust back to France where he later died
In 1799 he Published what is now known as the Law of Definite Proportions or the Law of Constant Composition, which stated that a compound always has the exact same proportions of elements by mass.
This related to Law is related to Lavoisier because it says that mass can not be destroyed or created, which is part of the Law of Conservation of Mass.
Fun Facts about Joesph Proust - Taught with Jean Pilatre
- Created elements from water
- Created artificial copper nitrate
- Published paper in 1774 yet laws not accepted until 1812
- Took interest in sugars found in sweet fruits
- Died at the age of 71 years old
- Born and died in the same town, Angers, France Sources


http://cstl-csm.semo.edu/mcgowan/ch181/atomhist.htm What Connects all three of these Scientists? All three of these scientists realized that the mass in reactions was consistent, and no mass was ever destroyed or appeared randomly. The mass was consistent no matter what the elements in the reactions Lavoisier, Dalton, and Proust -He named oxygen in 1778.
-He named hydrogen in 1783.
-He predicted silicon as an element in 1778.
-He helped set up the metric system.
-He put together the first extensive list of elements.
- He proved sulfur was an element and not a compound.
-Around 1785 he proved that matter changes forms, but will never gain or lose mass. All of these theories and laws are still used today. We even use these ideas and concepts in chemical reactions during class. The End How we use these ideas
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