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Module 2 Review
Test Description: Some basic questions based upon the information in module 2.
Instructions: Answer all questions to get your test result.
1) This atomic particle has a negative charge and very little mass.
A
proton
B
electron
C
neutron
D
nucleus
2) The nucleus of an atom contains which two particles?
A
quarks and protons
B
protons and neutrons
C
electrons and neutrons
D
protons and electrons
3) This particle is found in the nucleus and has a positive charge.
A
neutron
B
electron
C
nucleus
D
proton
4) The number of protons in a nucleus determines:
A
weighted average
B
atomic number
C
atomic mass
D
mass number
5) What caused the scientific community to accept Rutherford's atomic model?
A
Thompson approved Rutherford's experiment
B
Rutherford recreated Thompson's experiment
C
Science explained the complete experiment
D
Other scientists repeated the experiment
6) Which best explains why changes to the atomic theory were necessary?
A
new experimental evidence
B
improved technology
C
better funding of science
D
differing ideas
7) Why do scientists need scientific models?
A
They are typically based on mathematical explanations
B
They exactly present the scientific principle being demonstrated
C
Once established, they become fairly rigid and rarely change over time
D
They can often be used to make predictions
8) Modern atomic theory states that atoms are neutral. How is this neutrality achieved in atoms?
A
having fewer neutrons than protons or electrons
B
having equal numbers of protons and neutrons
C
having equal numbers of protons and electrons
D
having more neutrons than protons or electrons
9) A neutral atom of sodium (Na) has an atomic number of 11 and a mass number of 23. How many neutrons would be found in the nucleus of this atom of sodium?
A
34
B
23
C
11
D
12
10) Two atoms that have the same atomic number but different mass numbers are called
A
compounds
B
isotopes.
C
ions
D
radicals.
*select an answer for all questions
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