Molecular Nature of Matter
and Change 3rd Canadian
Edition By Martin Silberberg
(All Chapters 1-25, 100%
Original Verified, A+ Grade)
Answers at the end of each
Chapter.
All Chapters Arranged Reverse 25-1.
,Chapter 25
Student name:__________
1) Gamma rays are high energy electrons.
⊚ true
⊚ false
2) Gamma rays are not deflected by an electric field.
⊚ true
⊚ false
3) Positron decay and electron capture have the same net effect on the Z and N values of a
nucleus.
⊚ true
⊚ false
4) No alpha decay is observed for isotopes of elements with Z < 83.
⊚ true
⊚ false
5) Radioactive decay follows zero-order kinetics.
⊚ true
⊚ false
6) After 4 half-lives, the fraction of a radioactive isotope which still remains is approximately
one-eighth.
⊚ true
⊚ false
7) Most foodstuffs contain natural, radioactive isotopes.
⊚ true
⊚ false
Version 1 1
,Chapter 25
8) The (negative) binding energy per nucleon reaches a maximum for the isotope .
⊚ true
⊚ false
9) A positron is a form of anti-matter
⊚ true
⊚ false
10) Neutrinos are neutral particles that don't have an antimatter equivalent
⊚ true
⊚ false
11) Which one of the following equations correctly represents the alpha decay of ?
A)
B)
C)
D)
E)
12) Which one of the following equations correctly represents positron decay of ?
A)
B)
C)
D)
E)
Version 1 2
, Chapter 25
13) Which one of the following equations correctly represents electron capture by the
nucleus?
A)
B)
C)
D)
E)
14) Select the nuclide that completes the following nuclear reaction.
A)
B)
C)
D)
E)
15) Select the nuclide that completes the following nuclear reaction.
A)
B)
C)
D)
E)
Version 1 3