Download Quiz 3-6 fy13 - Nuclear Chemistry practice

Name: _____________________________
Date: _________________ Per:
_____
Chemistry
Quiz #3-6: Nuclear Chemistry PRACTICE
For each of the following questions or statements, select the most appropriate response and write its
letter on the answer line:
_____ 1.
What is the change in the atomic number when an atom emits an alpha particle?
A. decreases by 2
B. decreases by 1
C. remains the same
D. increases by 1
E. increases by 2
_____ 2.
What is the change in atomic number when an atom emits a beta particle?
A. decreases by 2
B. decreases by 1
C. stays the same
D. increases by 1
E. increases by 2
_____ 3.
What particle is emitted in alpha radiation?
A. electron
B. helium nucleus
C. hydrogen nucleus
D. photon
E. positron
_____ 4.
What thickness of what material is the minimum necessary to stop a beta particle?
A. three feet of concrete
B. three inches of lead
C. sheet of aluminum foil
D. sheet of paper
E. beta particles cannot be stopped
_____ 5.
What does gamma radiation consist of?
A. electrons
B. gamma particles
C. helium nuclei
D. hydrogen nuclei
E. photons
_____ 6.
What particle does argon-39 lose when it decays to potassium-39?
A. alpha particle
B. electron
C. neutron
D. positron
E. proton
_____ 7.
What particle is needed to complete this nuclear reaction?
A.
B.
C.
D.
E.
_____ 8.
What particle is needed to complete this nuclear reaction?
A.
B.
C.
D.
E.
_____ 9.
An unstable nucleus:
A. may have too many neutrons
B. may have too few neutrons
C. may turn into a new element
D. loses energy by emitting radiation
E. all of the above
_____ 10. A piece of wood found in an ancient burial mound contains only half as much carbon-14 as
a piece of wood cut from a living tree growing nearby. If the half-life (t1/2) for carbon-14 is
5730 years, what is the approximate age of the ancient wood?
A. 730 years
B. 1460 years
C. 2856 years
D. 5730 years
E. 11460 years
Answers:
1.
A
2.
D
3.
B
4.
C
5.
E
6.
B
7.
A
8.
D
9.
E
10. D