0
What evidence did JJ Thomson provide about the structure of an atom?
Wiki User
∙ 13y ago
J.J. Thomson while performing an experiment noticed the canal rays and said that they were electrically negative in nature and that was due to negatively charged particles. He called these negatively charged particles electrons.
Since, at that time many speculations were being done regarding the structure of an atom, he provided his model of an atom which is commonly called the "Plum-pudding model or Watermelon model".
Since, the atoms were electrically neutral, therefore he said that the electrons were uniformly distributed in a positively charged shell just like there are seeds in a watermelon.
But his speculations and model were rejected after Rutherford's 'Gold foil Experiment'.
Savannah Schowalter
Wiki User
∙ 13y agoJ.J. Thomson while performing an experiment noticed the canal rays and said that they were electrically negative in nature and that was due to negatively charged particles. He called these negatively charged particles electrons.
Since, at that time many speculations were being done regarding the structure of an atom, he provided his model of an atom which is commonly called the "Plum-pudding model or Watermelon model".
Since, the atoms were electrically neutral, therefore he said that the electrons were uniformly distributed in a positively charged shell just like there are seeds in a watermelon.
But his speculations and model were rejected after Rutherford's 'Gold foil Experiment'.
Wiki User
∙ 13y agoUsing cathode ray tubes, Thomson discovered that there were smaller, negatively charged particles within atoms, which he called corpuscles (later renamed electrons). By subjecting these cathode rays to a predetermined magnetic field, and measuring how much they bent, he was able to show that they were at least 1000 times lighter than a hydrogen atom, and behaved exactly the same regardless from which element they came from. Thus, he concluded (incorrectly, but it was a huge step nonetheless) that atoms were comprised of corpuscles that sat in a sea of positive charge; the so-called "plum pudding" model of the atom.
Wiki User
∙ 13y agoElectric current
Add your answer:
Earn +20 pts
Where can you find a drawing of Thomson's model of the atom?
For a picture of the Thomson's model of the atom, also called the Plum Pudding model, visit the Related Link.
What did JJ Thomson call his model of the atom?
Plum-pudding model of atom.
What instrument did Thomson use in the making of his model of the atom?
Thomson hadn't an instrument; this model is only a hypothesis.
What was the first model of the atom was developed through?
The first model of the atom was developed by Thomson.
What are the postulates of Joseph J Thomson?
Type your answer here... thomson model of an atom failed to explai that how the posiyive and negative charges were arrangedin an atom so close to each other
Who provided the evidence that atom contains subatomic particle?
It was J. J. Thomson (Joseph John Thomson)
What evidence convinced J.J Thomson that an atom consist of more than electrons?
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
In his proposed model of the atom J.J. Thomson imagined the atom contained .?
Thomson is responsible for discovering that an atom contains electrons.
What evedence convinced JJ Thomson that an atom consists of more than electrons?
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
Who was the first scientist to provide evidence that an atom has a nucleus?
Neil Bohr
Why do you think Thomson hypothesized that electrons must come from inside an atom?
Thomson had two pieces of evidence: 1- No matter what metal he used for the disk, the particles produced were indentical. 2- The particles had about 1/2000 the mass of a hydrogen, the lightest atom. These experiments provided the first evidence that atoms are made of even smaller particles.
What feature of the nuclear model led to other scientific studies on the structure of the atom?
Thomson's watermelon model was further enhanced by Rutherford with his Gold foil experiment. This is also known as atomic model and led to the scientific study of atom's structure.
. J. J. Thomson and experiments provided evidence that an atom .?
a cathode ray
What did Joseph John Thomson conclude about the atom?
J.J. Thomson discovered the electron and proposed the plum-pudding model for the atom.
Why is indirect evidence important in studying the structure of the atom?
The atom is far too small to ever be examined directly. The diameter of a typical nucleus is only about 1/100,000 of the diameter of the entire atom and if an atom were magnified until it was as large as a football stadium, the nucleus would be about the size of a grape. Nearly all evidence of an atom's structure has been theorized.
Why is Indirect evidence important in the study structure of the atom?
The atom is far too small to ever be examined directly. The diameter of a typical nucleus is only about 1/100,000 of the diameter of the entire atom and if an atom were magnified until it was as large as a football stadium, the nucleus would be about the size of a grape. Nearly all evidence of an atom's structure has been theorized.
Which model of the atom illustrated that an atom was a cloud of an positive charge with electrons randomly embedded within it?
The plum pudding model by JJ Thomson.
