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WorksheetsWired Article: Development of the Atomic Model
Total questions: 9
Worksheet time: 5mins
Democritus came to his idea of atoms because...
Researchers in Sparta gave him data to work with.
He reasoned that if there are four elements, there must be atoms.
He reasoned that if he broke something in half enough times than he must eventually arrive at the smallest thing.
He really just wanted to make Aristotle angry.
Dalton's theory is known as the first scientific atomic model. What made the model scientific?
Dalton published the model in 1808 in an important scientific journal.
Dalton had worked to gather a great deal of experimental evidence.
Dalton was supported by the work of the Greek philosopher Democritus.
Dalton won a competition with a rival in the courtyard of the Tower of London
Select all of the true statements about the work of J.J. Thomson.
Thomson worked with beams of electrons.
Thomson found the masses of the proton and neutron..
Thomson calculated the relation between the mass and charge of an electron.
Thomson's model had electron "raisins" embedded in a positive (plum) pudding.
Which statement is true about Rutherford's career?
Rutherford was a pioneering chemist.
Rutherford was a biologist.
Rutherford was a pioneering geneticist.
Rutherford was a well known physicist.
What was the primary finding of Rutherford's experiment?
atoms with a very small, incredibly dense nucleus
the interaction and interchange between protons and neutrons
he just didn't have a taste for plum pudding
the detailed structure of alpha particles
alpha particles are equivalent to helium nuclei
What happened to Rutherford's alpha particles.
They all passed right through the foil.
The particles began bouncing off the foil in random directions.
Most of them passed through the foil, but some bounced off.
All of the particles deflected at extreme angles, toward the scientist.
Niels Bohr (the great Dane) tried to relate atoms and _____________.
sound
light
philosophy
plum pudding
Check the true statements.
atoms have energy levels
electrons travel in fixed orbits around the nucleus
specific elements have specific colors of light
electrons do not interact with atomic energy levels
Electrons in atoms
orbit around the nucleus like planets
remain in fixed positions
I don't know and neither do you. We can only calculate probabilities.
Given that the nucleus is tiny and the electrons are so fuzzy and spread out can you really, like, be IN an atom? Whoa.
