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Section 5.1
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1
The atomic theory states that…
A)most types of matter are made up of atoms.
B)atoms of the same element are different in their mass and size.
C)different elements are composed of similar atoms.
D)atoms cannot be created or destroyed.
2
The scientist John Joseph Thomson discovered the…
A)proton
B)electron
C)neutron
D)neutrino
3
What type of description did J.J. Thomson use to describe his model of the atom?
A)a ball with electrons orbiting it
B)positively charged particles embedded in a nucleus
C)electrons inserted into a positively charged lump of material
D)a collection of negative and positive charges randomly scattered in circles
4
Rutherford’s model of the atom proposed that…
A)negatively charged electrons revolve around the nucleus.
B)negatively charged protons revolve around the nucleus.
C)positively charged protons revolve around the nucleus.
D)negatively charged electrons revolve around positively charged protons.
5
Which of the following scientists stated that electrons only move within fixed regions, or energy levels?
A)Ernest Rutherford
B)J.J. Thomson
C)John Dalton
D)Niels Bohr





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