protons,neutrons and electrons are the sub atomic particles
John Dalton is best known for work on atomic theory. While his models were very similar to the speculation of the Greeks made centuries before, his theory differentiated in the idea that chemical combination takes place between particles of different weights.
The model of the atom with no subatomic particles is the Dalton model, proposed by John Dalton in the early 19th century. In this model, atoms were considered indivisible and the smallest building blocks of matter. Subatomic particles like protons, neutrons, and electrons were not discovered until much later.
The discovery of the electron by J.J. Thomson through his cathode ray tube experiment led scientists to question John Dalton's model of the atom. Thomson's observation of negatively charged particles in the cathode ray, along with their behavior under electric and magnetic fields, contradicted Dalton's indivisible and uniformly dense model of the atom. Thomson's model, proposing that atoms contain subatomic particles (electrons), gained favor due to its ability to explain these experimental findings.
The scientist who developed the atomic theory of matter was John Dalton. He proposed that matter is made up of indivisible particles called atoms that combine in specific ratios to form different compounds.
John Dalton's work on atomic structure helped to explain the Law of Multiple Proportions put forth by French chemist Joseph Proust. This law states that when elements combine to form compounds, they do so in simple whole-number ratios based on their atomic masses. Dalton's atomic theory proposed that elements are made up of indivisible particles called atoms, which provided a conceptual foundation for understanding how elements combine to form compounds in fixed ratios.
see along time ago before dinosaurs walked the earth. the end.
John Dalton's atomic theory indicated that atoms were indivisible spheres. When JJ Thomson did his work with cathode ray tubes, he discovered that atoms contain electrons, which meant that the atom is not indivisible, that there are smaller particles within
John Dalton is best known for work on atomic theory. While his models were very similar to the speculation of the Greeks made centuries before, his theory differentiated in the idea that chemical combination takes place between particles of different weights.
The model of the atom with no subatomic particles is the Dalton model, proposed by John Dalton in the early 19th century. In this model, atoms were considered indivisible and the smallest building blocks of matter. Subatomic particles like protons, neutrons, and electrons were not discovered until much later.
If i remember correctly, Dalton's focuses more on the nucleus while Thompson's focuses more on electrons. But I'm not sure. well in 1803 John Dalton makes a strong case that atoms are small, solid balls and Joeseph John Thompson discovers electrons, and developed plum pudding model of an atom..... Dalton says that nothings smaller than the atom, but Thompson says that electrons are.
John Dalton was a British scientist known for his work in chemistry and the development of atomic theory. His most notable invention was the concept of atomic theory, which proposed that all matter is composed of tiny, indivisible particles called atoms. Dalton also introduced symbols to represent elements and their atomic weights, laying the foundation for modern chemistry.
dalton wasnt the one who experimented with gold, rutherford was the one who did the gold foil experiment.
The discovery of the electron by J.J. Thomson through his cathode ray tube experiment led scientists to question John Dalton's model of the atom. Thomson's observation of negatively charged particles in the cathode ray, along with their behavior under electric and magnetic fields, contradicted Dalton's indivisible and uniformly dense model of the atom. Thomson's model, proposing that atoms contain subatomic particles (electrons), gained favor due to its ability to explain these experimental findings.
John Dalton was concerned by the problems of color blindness, meteorology, measurement of altitude, gas laws, atomic weights, structure of the matter, etc.
1956
A Dalton's model of atom doesn't exist. Dalton principles are not in agreement with the discovery of isotopes and nonstoichiometric compounds.
what is john daltons scientific attitude