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What did J. J. Thomsons experiments provided evidence about an atom?
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What was JJ Thomsons model of the atom called?
plum pudding model
What did Ruthford's Gold Foil Experiment provide evidence for?
The experiment provided evidence for a positively charged bundle in the center of the atom. We now know this to be the nucleus.
How did Thomsons experiment change Dalton's atomic model APEX?
thonmson discovered that the atom contained smaller particles called electrons
Why has the model of the atom changed over time?
Improved knowledge of the atom via new experiments and development of new theories (e.g. quantum mechanics).
Rutherford's experiments led to the discovery of the?
Rutherford's experiment was important because it showed that an atom is mostly empty space. Rutherford gave more detail of the atom's structure.
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.
Who provided evidence for the nucleus in an atom?
Ernest Rutherford
Who provided evidence for the existence of the nucleus in an atom?
Ernest Rutherford
What were Thomsons and rutherfords key discoverirs about the atom?
im awesome!
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 was JJ Thomsons model of the atom called?
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.
Who provided the evidence that atom contains subatomic particle?
It was J. J. Thomson (Joseph John Thomson)
Who provided evidence for the existence of a nucleus in an atom?
Ernest Rutherford
How did Rutherfords model of the atom different from thomsons?
The Rutherford model involve a positive nucleus separated from electrons.
What did Ruthford's Gold Foil Experiment provide evidence for?
The experiment provided evidence for a positively charged bundle in the center of the atom. We now know this to be the nucleus.
Rutherford's gold foil experiment provided evidence for what statements?
There is a dense, positively charged mass in the center of an atom...
