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The cathodic rays beam was deflected by the atomic nucleus.

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The first scientist to show that atoms emit tiny negative particles was?

J.J. Thomson, in 1897, was the first scientist to show that atoms emit tiny negative particles, which we now know as electrons. This discovery led to the development of the plum pudding model of the atom.


How did Thomson's experiment change Dalton's atomic model?

Thomson's experiment provided evidence for the existence of electrons within atoms, leading to the modification of Dalton's model to include subatomic particles. Instead of envisioning atoms as indivisible spheres, Thomson's discovery suggested that atoms were composed of smaller, negatively charged particles (electrons) embedded within a positively charged sphere.


How did the discovery of electrons shows that there are also positively charged parts of the atom?

The discovery of electrons by J.J. Thomson provided evidence for the existence of positively charged particles in the atom because atoms were found to be electrically neutral overall. Thomson's experiments with cathode rays showed that electrons carried a negative charge, leading to the conclusion that there must be positively charged particles in the atom to balance the negative charge of the electrons.


Thomson discovered that atoms were not simple spheres but contained what?

Thomson discovered that atoms were not simple spheres but contained smaller negatively charged particles called electrons, embedded within a positively charged material. This discovery formed the basis of the plum pudding model of the atom.


Who discovered that atoms have negative electric charge?

There were several scientists that discovered that atoms contained electric charges. One of the first to look at their charges more closely was J.J. Thomson.

Related Questions

What evidence did Thomson that his glowing beam contained negative particles?

The cathodic rays beam was deflected by the atomic nucleus.


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.


How did the Thomson's experiment change Dalton's atomic model?

Thomson discovered that the atom contained smaller particles called electrons


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.


How did Thomson help our understanding of the atom?

He discovered that the atom contained smaller particles called electrons.


How did Thomson help the understanding of atom?

He discovered that the atom contained smaller particles called electrons.


Who first determined that atoms contained even smaller particles?

Thomson, which is considered as the discoverer of electrons.


What particles did jj Thomson discover?

J.J. Thomson discovered the electron in 1897 while conducting experiments with cathode rays. This discovery was groundbreaking as it provided evidence for the existence of subatomic particles.


What observation did Thomson make to suggest that an electron has a negative electric charge?

The deflection of cathodic rays was the source of inspiration for Thomson.


How did J.J. Thomson discover negative charges?

J.J. Thomson discovered negative charges by studying cathode rays in a vacuum tube, where he observed that they were deflected by electric and magnetic fields in a way consistent with negatively charged particles. This led him to propose the existence of negatively charged particles, which he later named electrons.


The first scientist to show that atoms emit tiny negative particles was?

J.J. Thomson, in 1897, was the first scientist to show that atoms emit tiny negative particles, which we now know as electrons. This discovery led to the development of the plum pudding model of the atom.


How j.j Thomson discovered electrons are negative?

J.J. Thomson discovered electrons are negative by conducting experiments with cathode rays in vacuum tubes. He observed how the rays were attracted to a positively charged plate, leading him to conclude that the particles in the rays carried a negative charge, which he named electrons.