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What is the best evidence that the particles of matter are constantly moving comes from?
The best evidence that particles of matter are constantly moving comes from the observation of Brownian motion. This is the random movement of particles suspended in a fluid, caused by collisions with molecules of the surrounding medium. The continuous, random motion of these particles provides strong evidence for the kinetic theory of matter.
Did Robert millikan discover subatomic particles?
No, Robert Millikan did not discover subatomic particles; rather, he is best known for his work on the oil drop experiment, which measured the elementary charge of the electron. His experiments provided crucial evidence for the quantization of electric charge and helped confirm the existence of electrons as subatomic particles. Although he contributed significantly to the understanding of atomic structure, the discovery of subatomic particles like electrons was attributed to other scientists, such as J.J. Thomson.
Brownian motion is evidence of?
Brownian motion is evidence of the random movement of particles suspended in a fluid, caused by collisions with the fluid's molecules. This phenomenon served as crucial evidence supporting the kinetic theory of matter, which states that all matter is made up of particles in constant motion.
What happened when Rutherford exposed nitrogen gas to alpha particles?
When Ernest Rutherford exposed nitrogen gas to alpha particles in 1917, he observed that the nitrogen nuclei were bombarded and resulted in the emission of protons. This experiment demonstrated that alpha particles could induce nuclear reactions, leading to the transformation of nitrogen into oxygen. This finding was significant as it provided early evidence of nuclear transmutation and contributed to the understanding of atomic structure and nuclear physics.
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 evidence did J.J Thomson provided about this structure of an atom?
J.J. Thomson provided evidence about the structure of an atom through his discovery of the electron using cathode ray tubes. His experiments showed that electrons are negatively charged particles and are present in all atoms, leading to the development of the plum pudding model of the atom.
What is the best evidence that the particles of matter are constantly moving comes from?
The best evidence that particles of matter are constantly moving comes from the observation of Brownian motion. This is the random movement of particles suspended in a fluid, caused by collisions with molecules of the surrounding medium. The continuous, random motion of these particles provides strong evidence for the kinetic theory of matter.
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 is circumstantial evidence and how does it differ from direct evidence in a legal context?
Circumstantial evidence is evidence that implies a fact but does not directly prove it. It requires inference or deduction to connect it to a conclusion. In contrast, direct evidence directly proves a fact without the need for inference.
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 attractions do the solid particles have between each other?
evidence that particles have spaces between each other
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.
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.
How is circumstantial evidence distinguished from physical evidence in a criminal investigation?
Circumstantial evidence is indirect evidence that implies a fact but does not directly prove it, while physical evidence is tangible evidence that can be directly observed or measured. In a criminal investigation, physical evidence is typically more reliable and persuasive than circumstantial evidence because it provides concrete proof of a fact.
Why do particles matter to forensic scientists?
Particles matter to forensic scientists because particles can leave behind evidence of the criminal. Particles, only regarded as dust for example and not fibres etc hold great significance and can identify if a body has been moved etc, along with evidence such as livor mortis etc
What evidence is there of the particle theory?
The evidence for the particle theory of matter is supported by the behavior of particles in the kinetic molecular theory, such as the diffusion of gases, Brownian motion, and the interaction of particles in chemical reactions. Additionally, the observation of subatomic particles like protons, neutrons, and electrons further solidifies the particle nature of matter. Experimental data from particle accelerators also provide evidence for the existence of various elementary particles.
What are the five evidence of evolution are?
biochemical evidence anatomical evidence fossils vestigial structure embryological evidence
