Atomic Theory Answers

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Niels Bohr’s theory was based on

evidence from a beam of particles that scattered after hitting thin gold foil.

evidence that an atom will actually emit colors when heated.

the experimental results of other scientists.

the effect of holding a magnet next to a beam of electrons.

The current atomic model has a

clear and exact placement for every electron around the nucleus of an atom.

clear and distinct border surrounding the nucleus of an atom where electrons are located.

predicted area surrounding the nucleus where the electron could be located.

Dalton’s theory was identified using

light microscope images of atoms.

the experimental results of other scientists.

water vapor and air experiments.

Dalton determined that a chemical reaction was simply a(n) of atoms, not the creation of new substances.

destruction

rearrangement

explosion

What discovery led J.J. Thomson to decide that atoms were not indivisible, but are actually composed of smaller parts?

Thomson used a scanning tunneling micrograph to capture images of atoms.

Thomson used a beam of negatively charged particles.

Thomson used only the experimental results of other scientists.

Rutherford’s theory was identified by

using a beam of particles and detecting the scattering of the particles after they hit gold foil.

holding a magnet next to a beam of electrons and carefully analyzing the results.

using scanning tunneling micrograph images of atoms.

using only the experimental results of other scientists.

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