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This set of MCQs helps you brush up on important chemistry topics and prepare you to dive into skill practice.
Which scientist proposed that atoms are infinitesimal round balls, unable to be seen by the naked eye?
Rutherford
Thomson
Democritus
Bohr
The simplest model of the atom is represented by which letter?
C
D
A
B
The most complex model of the atom, though not technically correct, is represented by which letter?
D
C
B
A
Which model of the atom is denoted as the "plum pudding" or "chocolate chip" model?
A
B
C
D
Ernest Rutherford discovered that atoms were mostly,
Negatively charged
Positively charged
Electrons
Empty space
The majority of an atom's mass exists where?
In the electron cloud
In the nucleus
In the space between the nucleus and the electrons
In the neutrons
Place the following scientists in order, from earliest to latest: A) Ernest Rutherford; B) J.J. Thomson; C) John Dalton.
C,A,B
A,B,C
C,B,A
B,C,A
What subatomic particle represents the "plums" or the "chips?"
Positrons
Electrons
Protons
Neutrons
