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j.j thomson
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Who first determined that atoms contained even smaller particles?
Thomson, which is considered as the discoverer of electrons.
Describe the discovery that demonstrate for the first time that atoms are not the smallest particles of matter?
The discovery of the subatomic particles demonstrated for the first time that atoms are not the smallest particles of matter. Electron was the first subatomic particle discovered by J.J. Thomson.
What The first subatomic particle discovered?
Subatomic particles are particles that are smaller than atoms. There are two different types of subatomic particles: elementary particles and composite particles. The first subatomic particle that was discovered was the electron. It was first theorized to exist by G. Johnstone Stoney in 1874 and was confirmed to exist in 1897 by J.J. Thomson.
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 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.
What was the first subatomic particle discovered?
Subatomic particles are particles that are smaller than atoms. There are two different types of subatomic particles: elementary particles and composite particles. The first subatomic particle that was discovered was the electron. It was first theorized to exist by G. Johnstone Stoney in 1874 and was confirmed to exist in 1897 by J.J. Thomson.
Why subatomic particles are not building blocks of matter?
Matter actually is made of sub-atomic particles. It would be perfectly reasonable to describe sub-atomic particles as the building blocks of matter. You might imagine that you have to assemble the sub-atomic particles into atoms first, and then use the atoms as your building blocks, but lots of things are not made of atoms; for example, you do not find atoms in the sun, which is so hot that atoms disintegrate into a plasma of atomic nuclei and free electrons.
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.
Is this true or false When a river slows down and deposits its sediment load smaller particles of sediment are deposited first?
True. When a river slows down, it loses its ability to carry large sediment particles, so it deposits them first. Smaller particles settle later as the energy of the river decreases further.
Who was the first to suggest that matter is made of small particles called atoms?
Peter Waltan......hope that helps!
Did Democritus describe that Atoms are small hard particles?
Yes, Democritus described that atoms are small, indivisible, and indestructible particles that make up all matter. He believed that atoms are constantly moving and combining to form different substances.
Who discovered that virus are smaller than bacteria?
Many people guessed that viruses existed but Helmut Ruska first imaged virus particles - using beams of electrons deflected off virus particles coated in heavy metal atoms. From 1938 through the early 1940s, he imaged virions using an electron microscope.
