Atoms And The Atomic Theory: Question Preview (ID: 23692)


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What charge do the fast-moving particles emitted by uranium have?
a) alternating
b) negative
c) positive
d) neutral

Who discovered the fast-moving particles emitted by the element uranium?
a) Dalton
b) Thomson
c) Rutherford
d) Chadwick

What was the name given to the fast-moving particles emitted by uranium?
a) alpha
b) beta
c) delta
d) gamma

Which scientist stated that atoms of the same element have the same mass?
a) Dalton
b) Thomson
c) Rutherford
d) Chadwick

Which scientist conducted an experiment where he observed a glowing beam of light between two charged metal disks?
a) Dalton
b) Thomson
c) Rutherford
d) Chadwick

After Rutherford making his observations during his gold foil experiment, he concluded that the positive charges of an atom are:
a) evenly distributed throughout the atom
b) not evenly distributed throughout the atom
c) the number of fast-moving particles equals the number of slow-moving particles
d) the number of neutrons equals the number of electrons

Rutherford was able to modify the atomic theory based on his gold foil experiment where he proposed:
a) an atoms positive charge is located in the empty space between the electrons and the nucleus
b) an atoms negative charge is located in the nucleus
c) an atoms positive charge was due to the number of electrons in orbit around the nucleus
d) an atoms positive charge is located in the nucleus

Which scientist is credited with the discovery of the electron?
a) Dalton
b) Thomson
c) Rutherford
d) Chadwick

Even though Rutherford predicted the existence of a third subatomic particle, who actually conducted an experiment to show neutrons existed?
a) Dalton
b) Keppler
c) Thomson
d) Chadwick

Another conclusion Rutherford was able to make based on the results of his gold foil experiment was:
a) the mass of an electron was almost equal to the mass of a neutron
b) beta particles were only given off by uranium
c) uranium and strontium were heavier than gold
d) the amount of positive charge varies from element to element

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