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by BlastRoom
Compare major atomic models and the evidence that changed them.
#chemistry
20 questions
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Which scientist modeled the atom as a solid, indivisible sphere with no internal parts?
Which model pictures the atom as a sphere of positive charge with electrons embedded throughout it?
In Rutherford's gold foil experiment, why did a few alpha particles bounce almost straight back?
In which model do electrons travel only in certain fixed circular orbits around the nucleus?
How does the modern quantum-mechanical model represent electrons?
Which model was the first to include electrons but had no nucleus?
Which model first described the atom as mostly empty space around a compact central positive charge?
Which model shows electrons as a spread-out probability region rather than as dots on fixed rings?
Cathode rays from different metals showed the same negative-charge behavior. Which model change did this evidence support?
In the gold foil experiment, most alpha particles passed through thin gold foil, but a few bounced back at large angles. What conclusion best fit both observations?
Hydrogen gas gives separate bright lines instead of a continuous rainbow when energized. Which change in atomic modeling did this evidence support?
Experiments showed beams of electrons could produce diffraction patterns like waves. Which model change did that evidence support?
Charged oil drops rose or fell between electric plates in Millikan's experiment, and their charges were multiples of one small value. What did Millikan determine?
Elements in a pure compound combine in fixed mass ratios, and reactions rearrange matter without changing total mass. Which early atomic idea did this support?
Chadwick bombarded beryllium with alpha particles and detected neutral radiation that knocked protons from paraffin. Which discovery followed?
Moseley measured characteristic X-ray frequencies and showed the periodic table should be ordered by increasing nuclear charge. What did this clarify about atoms?
Which sequence puts the major atomic models in historical order?
In the main model sequence, what model came after Thomson's plum pudding model?
Which list is in earliest-to-latest order for features added to atomic models?
Which model should be placed between Rutherford's nuclear model and the quantum electron-cloud model on a historical timeline?
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Electron Configuration: Writing the Notation
30 questions
