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No, the atomic theory is not always the model of matter. While the atomic theory is widely used and supported, there are other models, such as the quantum mechanical model, that provide a more detailed understanding of matter at the atomic and subatomic levels. These models build upon the atomic theory but also incorporate additional concepts from quantum mechanics.
cloud model
All elements have an atomic nucleus containing protons and neutrons and also a cloud of electrons.
First of all he did'nt say that it was invisible, he said it was indivisible i.e. it cannot be divided further but it can be in the form of protons,electrons and neutrons.That's why it was not accepted. By the way he proposed atomic theory not a model. Models were proposed by THOMSON, RUTHERFORD and NEIL BOHR.
It is true that an atom has a nucleus. As for which model of the atom is thought to be true, at the present time we use a model based upon quantum mechanics which differs significantly from the early Rutherford or Bohr atomic models.
explain how the development of atomic models demonsrates the scientific prosess
DODO !
The atomic models change because scientists have found new evidens dissproving old atomic models and therefore changing them to what they are today although they are still subject to change
Atomic models tell us about the structure of an atom which is based on what we know about how atoms behave. But it is not necessary that it will be a genuine picture of the structure of an atom.
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mamamaamamamama
Atomic particles are too small to be easily observed directly.
Bohr's planetary model Rutherford's model
No, the atomic theory is not always the model of matter. While the atomic theory is widely used and supported, there are other models, such as the quantum mechanical model, that provide a more detailed understanding of matter at the atomic and subatomic levels. These models build upon the atomic theory but also incorporate additional concepts from quantum mechanics.
John Dalton
As atomic interactions occur on a molecular level, we cannot observe them. Hence the need to use atomic models. Atomic models can differentiate atom types, show us the structure of molecules and their bonding (ie. double-bonds, triple-bonds etc.) They can even show the angle of the bonds. However, they may not always be accurate and cannot show the strength of the bonds and conductivity etc.
Excepting philosophical atomism John Dalton is the first to elaborate an atomic theory.