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What findings led JJ Thomson to infer that particles are smaller than atoms do exist?
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∙ 13y ago
Particles are smaller
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∙ 13y ago
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Why was Dalton's model of the atom changed after Thomson's experiment?
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.
The first scientist to show that atoms emit tiny negative particles was?
ha, i have this same question on my semester exam review. im almost positive is J.J. Thomson
Thomson discovered that atoms were not simple spheres but contained what?
protons and neutrons. atoms are not the smallest thing but protons are. protons are slightly smaller than neitrons. but are not simple sphere's.
How did Thomson's discovery change Dalton's atomic theory?
Thomson discovered that atoms can be cut. He found this out while studying rays traveling between charged metal plates in a vacuum tube. He discovered that the rays were consisted of negatively charged particles. He had just discovered electrons. He discovered all of this on a trip from America. Since electrons are so small, he believed that they could only be from inside of the atom. Since Thomson's discovery of the electron, John Dalton's theory that atoms are indivisible had to be changed.
Which is not part of John Dalton atomic theory?
Atoms are made up of smaller particles.
Who first suggests that atoms are made up of smaller particles?
j.j thomson
Who first determined that atoms contained even smaller particles?
Thomson, which is considered as the discoverer of electrons.
Which tenet of Daltons atomic theory did Thomson disprove?
Atoms cannot be divided into smaller particles.
Did JJ Thomson experiments that showed that atoms cannot be divided into smaller particles?
duma$$ u should know this
Why was Dalton's model of the atom changed after Thomson's experiment?
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.
What evidence supported Thomson's hypothesis that negative particles he observed came from inside atoms.?
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.
Are particles smaller then atoms?
particle is a general term. subatomic particles are smaller than atoms. dirt particles, for example, are much bigger than atoms
Can atoms be made of smaller particles?
Yes - all atoms are made of smaller particles. Those particles are protons, neutrons, and electrons.
Does particles have particles?
In a way they do, but even smaller "particles" are called atoms.
What evidence supported thomsons hypothesis that the negative particles he observed from inside atoms?
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 did thomson's cathode-ray tube experiment help scientists learn?
Proved that not only did electrons exist, but they were identical reguardless of what element the were derived from. So atoms were made up of smaller particles.
Who Discovered that atoms contain negatively charged particles called electrons?
In 1897, a British scientis named J.J. Thomson.
