History of the Atom
Authored by Hayley Springer
Chemistry
9th - 12th Grade
Used 33+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following observations led Thomson to conclude that cathode ray particles were negatively charged?
He observed that negatively charged plates repelled the rays.
He observed that a metal plate exposed to cathode ray particles became positively charged.
He observed that cathode ray particles traveled in a straight path through electric fields.
He observed that positively charged plates repelled the rays.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Niels Bohr, electrons gain energy and emits electromagnetic radiation(energy). These electrons are found in-?
energy levels
nucleus
only in the gold foil
protons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In 1897, J.J. Thomson used a device like the one shown to discover that cathode rays were
streams of —
photons
electrons
protons
ions
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who discovered electrons?
Dalton
Rutherford
Thomson
Bohr
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who discovered that electrons exist in energy levels or shells?
Dalton
Rutherford
Thomson
Bohr
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these is not one of Rutherfords conclusions...?
nucleus is small
nucleus is dense
nucleus is positively charged
nucleus has no charge
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rutherford used what to make his discoveries?
Gold foil experiment
cathode ray tube
Jimmy neutron model
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