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Quiz On 5.1-5.2 Part 3
Test Description: Chemistry Unit
Instructions: Answer all questions to get your test result.
1) A measure of the decay rate of a radioactive substance is called
A
Heisenberg uncertainty priniciple
B
half life
C
atomic mass
D
mass number
2) The number of protons and neutrons in an atom\\\'s nucleus is called the
A
Heisenberg uncertainty priniciple
B
half life
C
atomic mass
D
mass number
3) What is the atomic mass?
A
the number of protons and neutrons in an atom\\\'s nucleus.
B
the average mass of all of an element\\\'s isotopes compared to the mass of a carbon-12 atom
C
the amount of fissionalbe material that must b present in order for a nuclear chain reaction to occur
D
a measure of the decay rate of a radioactive substance
4) What is the critical mass?
A
he average mass of all of an element\\\'s isotopes compared to the mass of a carbon-12 atom
B
the amount of fissionalbe material that must b present in order for a nuclear chain reaction to occur
C
a measure of the decay rate of a radioactive substance
D
the number of protons and neutrons in an atom\\\'s nucleus.
5) What charge does a proton have?
A
both
B
positive
C
None
D
negative
6) What charge does a neutron have?
A
positive
B
both
C
none
D
negative
7) What charge does an electron have?
A
negative
B
positive
C
both
D
None
8) What is Brownian motion?
A
There is no such thing
B
None of the above
C
deals with cooking brownies
D
random motion of microscopic marticles
9) What was John Dalton's theory?
A
Brownian theory
B
Atomic theory of matter
C
None of the above.
D
The Kinetic theory of matter
10) Who introduced the quantum theory?
A
None of the above.
B
Neils Bohr
C
Max Planck
D
This is not a theory
*select an answer for all questions
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