0
J. J. Thomson's experiments provided evidence for the existence of electrons as subatomic particles within the atom. This led to the plum pudding model of the atom, where electrons were embedded in a positively charged "pudding." These experiments laid the foundation for our understanding of atomic structure.
What else can I help you with?
What did Ruthford's Gold Foil Experiment provide evidence for?
Rutherford's Gold Foil Experiment provided evidence for the existence of a small, positively charged nucleus at the center of the atom. This discovery led to the development of the nuclear model of the atom and overturned the previous plum pudding model.
Why has the model of the atom changed over time?
The model of the atom has changed over time as new experimental evidence and advancements in scientific theories have provided a better understanding of the structure and behavior of atoms. Early models were simple and did not explain many observed phenomena, leading to revisions and the development of more sophisticated models such as the Bohr model and the quantum mechanical model._ADV
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.
What did Rutherford's backward deflection of alpha particle give evidence of an atom's?
Rutherford's backward deflection of alpha particles in the gold foil experiment provided evidence of an atom's nucleus. The deflection indicated that the majority of an atom's mass and positive charge is concentrated in a small, dense nucleus at its center, with electrons orbiting around it. This discovery led to the development of the nuclear model of the atom.
What scientific inquiry skill was Rutherford using in selecting Thomson's model for investigation?
Rutherford was using the scientific inquiry skill of hypothesis testing when selecting Thomson's model for investigation. He proposed an alternative model to test and refine the existing understanding of the structure of the atom, setting up experiments to gather evidence that would support or refute Thomson's model.
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 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.
Who provided evidence for the nucleus in an atom?
Ernest Rutherford
What were Thomsons and rutherfords key discoverirs about the atom?
im awesome!
Who provided evidence for the existence of the nucleus in an atom?
Ernest Rutherford
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.
How did the atomic model evolve from indirect evidence?
The atomic model evolved from indirect evidence through various experiments like the cathode ray tube, the oil drop experiment, and the Rutherford scattering experiment. These experiments provided insights into the structure of the atom, leading to the development of atomic models such as the plum pudding model, the nuclear model, and eventually the modern quantum mechanical model.
What experiments led to bohrs model?
Experiments like the photoelectric effect and atomic emission spectra provided evidence that electrons exist in discrete energy levels. These findings challenged the classical model of the atom, leading to Niels Bohr proposing his model in 1913 to explain the quantization of electron energy levels in atoms.
What did Ruthford's Gold Foil Experiment provide evidence for?
Rutherford's Gold Foil Experiment provided evidence for the existence of a small, positively charged nucleus at the center of the atom. This discovery led to the development of the nuclear model of the atom and overturned the previous plum pudding model.
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 Rutherfords model of the atom different from thomsons?
The Rutherford model involve a positive nucleus separated from electrons.
What scientist confirmed the existence of neutrons?
James Chadwick, a British physicist, confirmed the existence of neutrons in 1932 through his experiments on the interaction of alpha particles with beryllium. Chadwick's discovery of neutrons provided a key piece of evidence for the development of the nuclear model of the atom.
