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It's J.J. Thomson
He had the plum pudding experiment
The answer is Thomson
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∙ 12y ago
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∙ 11y agoWiki User
∙ 8y agoThat was Earnest Rutherford. He carried out gold leaf experiment
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∙ 12y agoratharford 1911
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∙ 11y agoJJ Thomson, discoverer of the electron.
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∙ 11y agothomsom
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Why are atoms considered to have no electric charge?
It is because an atom consists of electrons(negatively charged) and protons(positively charged) and neutrons(no charge), and the no. of electrons and protons are equal. So due to opposite charges between an electron and a proton, an atom has no electric charge or is said to be neutral.
Who said that each element is composed of extremely small particles called atoms?
Someone Rutherford.
Who proposed each element is composed of extremely small particles called atoms?
i think Dalton said it
Who said atoms were made up of subatomic particles?
Rutherford proved it it from his alpha-particle scattering experiment.
Who said matter was made of particles called atoms?
Democritus did. The modern version of the atomic theory is based on the research of Dalton.
What has a positively or negatively charged particle of an atom?
In an atom, protons are positively charged and electrons are negatively charged. If the number of protons and electrons are equal, those atoms are said to be neutral. If they are not equal, it has formed an ion with the net charge.
When is an atom electrically charged?
a electically charged atom is also known as a eletron
What evidence did JJ Thomson provide about the structure of an atom?
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'.
Who said that there are small negatively charged particle's inside an atom?
not positive but jj thomson
Why are atoms considered to have no electric charge?
It is because an atom consists of electrons(negatively charged) and protons(positively charged) and neutrons(no charge), and the no. of electrons and protons are equal. So due to opposite charges between an electron and a proton, an atom has no electric charge or is said to be neutral.
Does an atom have a charge?
It depends on the atom. An atom is made of 3 subatomic particles- a negatively charged electron, a positively charged proton, and a neutral neutron. If the number of electrons and the number of protons are different, then the atom has a net charge. If the number of electrons and the number of protons are the same, then the atom is said to be neutrally charged. Changing the number of neutrons affects the mass and therefore important traits of each atom, but does not affect its charge. Atoms that have a net charge are called 'ions.'
Atoms are made up of smaller parts called?
cell membrane, nucleus,mitochondria
Who said Cathode rays are made up of negayively charged particles?
J.J.Thompson
The nucleus contains positively charged particles called protons and particles with no electric charge called neutrons Who said this?
Positively charged central part of the atom the nucleus is called protons.
How many little negatively charged subatomic particles would it take before the atom could not take any more in that layer of particles?
This question is fairly ambiguous, and answering it requires that we clear up some of the ambiguities. The "little negatively charged subatomic particles" ... let's just stipulate that the question said "electrons" instead. There are lots of negatively charged subatomic particles other than electrons, but electrons make the most sense in this context. Next, let's agree that "layer" actually means "principal quantum number," or what in Freshman Chemistry is usually called a "shell". The answer then is that it depends what layer/shell/principal quantum number we're talking about. For the first one, 2. For the second, 8. For the third, 18. For the fourth, 32. And in general, for the Nth one, 2N2.
If an object has more electrons than pro-trons it is said to be?
If an object has more electrons than proton it is said to be negatively charged and is called an anion.
What scientist said there are small negatively charged particles inside an atom?
Generally, the theoretical first is given to Richard Laming of England in 1851. More theoretical work and the term "electron" came from G. Johnstone Stoney between 1874 and 1891. The actual "discovery" is given to J. J. Thomson in 1897.
