The discovery of the neutron helped people understand
A. why the nucleus has a positive charge.
B. how electrons are attracted to the nucleus.
C. how two atoms of the same element can have different atomic masses.
D. why the nucleus is much more massive than the electrons in an atom.
Answer: C
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Fill in the blank(s) with correct word
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A) 5.0 × 10-4 V B) 4.0 × 10-4 V C) 1.0 × 10-4 V D) 0 V E) none of the given answers
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What will be an ideal response?
What surprising discovery did the New Horizons spacecraft make during its 2015 flyby of Pluto?
A) Pluto has the largest known volcano in the solar system. B) Pluto's surface consists mostly of rocky material. C) Pluto's surface shows signs of very recent geological activity. D) Pluto is an escaped moon of Neptune. E) all of the above