Who was Lavoisier?

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Antoine Laurent Lavoisier was one of the founders of modern chemistry. Born in 1743 near Paris, the son of a lawyer, his father tried to follow his steps. He studied law but later, the scientific future was devoted entirely to research. In 1768 he was appointed member of the French Academy of Sciences. Achieved accuracy of measurements of the substances used and produced in chemical reactions, and decided to focus the phenomenon of combustion. He questioned the existence of phlogiston, a mysterious material that they believed his contemporaries, was the cause of the bodies were burning. Lavoisier took advantage of the discovery of oxygen by the English chemist Joseph Priestley in 1774 to raise the theory that phlogiston did not exist and when a burning substance combines with oxygen, an elemental gas. He also defined the elements as simple substances, they were able to combine to form compounds. He died in 1794 guillotined during the French Revolution.

How Lavoisier discovered hydrogen?

The English chemist Henry Cavendish reported that when you enter a gas combustion, which he called inflammable air, got water. Lavoisier repeated Cavendish's experiment using his usual accuracy in measurements. The results of this test will demonstrate that the water was a combination of oxygen and inflammable air, which it renamed hydrogen.

Lavoisier introduced a system for naming chemical elements, which was based on the modern system. In addition, he enunciated the "Law of conservation of matter." According to her, matter is neither created nor destroyed, only transformed.

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