AnswersPhysical Science Sem 1 2003310 BCPS 2026-27Evaluating Scientific Explanations

Evaluating Scientific Explanations Answers

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1
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Dalton’s theory was identified using

A
light microscope images of atoms.
B
the experimental results of other scientists.
C
water vapor and air experiments.
2
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What discovery led J.J. Thomson to decide that atoms were not indivisible, but are actually composed of smaller parts?

A
Thomson used a scanning tunneling micrograph to capture images of atoms.
B
Thomson used a beam of negatively charged particles.
C
Thomson used only the experimental results of other scientists.
3

Rutherford’s theory was identified by

A
using a beam of particles and detecting the scattering of the particles after they hit gold foil.
B
holding a magnet next to a beam of electrons and carefully analyzing the results.
C
using scanning tunneling micrograph images of atoms.
D
using only the experimental results of other scientists.
4

Niels Bohr’s theory was based on

A
evidence from a beam of particles that scattered after hitting thin gold foil.
B
evidence that an atom will actually emit colors when heated.
C
the experimental results of other scientists.
D
the effect of holding a magnet next to a beam of electrons.
5

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

A
destruction
B
rearrangement
C
explosion
6

The current atomic model has a

A
clear and exact placement for every electron around the nucleus of an atom.
B
clear and distinct border surrounding the nucleus of an atom where electrons are located.
C
predicted area surrounding the nucleus where the electron could be located.

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Evaluating Scientific Explanations Answers…