What is John Dalton s life and his contributions to physical chemistry?

The great contribution of Dalton, the father of the modern atom.

The main achievements are:

1. Creation of the atomic theory. In 1803, he inherited the ancient Greek naïve atomism and Newton's theory of particles, and proposed the atomic theory. The method of relative comparison was proposed to calculate the atomic weight of each element, and the first atomic scale was published.

2. Dalton put forward a more systematic theory of chemical atoms, introduced atoms and atomic weights, and made pioneering contributions to volumetric analysis methods.

3. Dalton suggested using simple symbols to represent the composition of elements and compounds.

4. Dalton was the first scientist to discover the phenomenon of color blindness.

John? Dalton, an English chemist and physicist, was born in 1766 in northern England. He proposed the law of conservation of mass, the law of proportion, the law of equivalence and the law of multiplication, introduced the concept of atomic weight, and proposed the Dalton atomic theory, which is different from the ancient Greek atomic theory.

In 1794, he wrote an essay entitled "Abnormal Facts About Color Discernment", revealing for the first time the secret of human color blindness. Later, he left his last words, "When I die, I want to take my eyeballs out for research."

Dalton published 116 scientific papers during his lifetime. But his experimental techniques were not top-notch. Many of his experimental instruments were self-made, and the experimental data obtained were not very accurate.

He had a physical defect such as "color blindness", but he succeeded. Dalton once said in his later years: "If people think that I have achieved greater success than my predecessors, it is mainly — no!"

It was all about continuous diligent study and study. ”

As a result of long-term exposure to mercury, Dalton developed chronic mercury poisoning. In the early morning of July 29, 1844, Dalton died at the age of 78 with his long-ailment body.

Dalton was born on September 6, 1766 in a poor country in England, his father was a textile worker, his mother gave birth to six children, and the family was very poor, one of Dalton's younger brothers and one sister died of hunger and disease. Dalton barely finished elementary school before being forced to drop out of school due to poverty.

John Dalton.

John Dalton (1766-1844) was one of the preeminent chemists of modern England. For more than a century, the British people and people around the world have missed this great man who loved science and engaged in chemical research.

Dalton's outstanding contribution to human science was his creation of the atomic theory.

As a result, chemistry has stepped out of the stage of disorganization and cannot reflect the internal connection, and has entered a new era of modern chemistry. More importantly, the atomic theory of science has provided a foundation for the development of the entire natural science, and has enabled later generations to develop their understanding of the structure of matter by leaps and bounds. Dalton's great exploits have earned him the reverence of the people.

The great contribution of Dalton, the father of the modern atom.