Worksheet: Nuclear Chemistry
MATCHING. Choose the item in column 2 that best matches each item in column 1.
1) alpha particle
4
A) 2 He
2) beta particle
3) gamma ray
1)
2)
0
B) -1 e
4) positron
1
0 γ
C)
3)
4)
0
D) 1 e
MULTIPLE CHOICE.
5) The half-life of samarium-153 is approximately 48 hrs, the leftover amount of an original quantity
of 10.0 mg after 144 hrs will be ________.
A) 0. mg
B) 1.25 mg
C) 2.50 mg
D) 5.00 mg
5)
6) Given the following half-lives, which of the following isotopes is the least stable?
A) 0.92 s
B) 56 s
C) 72 s
D) 0.001 s
6)
7) Rank the abilities of alpha, beta, and gamma radiations penetrating human skin
A) gamma > alpha > beta
B) gamma > beta > alpha
D) alpha > beta > gamma
C) alpha > gamma >beta
7)
PROBLEMS. Show work with proper Significant Figures and Units to receive credit.
8) Define
a) Ionizing radiation; b) Nuclear fission; c) Nuclear fusion; d) Half -life
9) What are the applications of the following concepts?
a) Ionizing radiation; b) Nuclear fission; c) Nuclear fusion; d) Half -life
1
MATCHING. Choose the item in column 2 that best matches each item in column 1.
10) nuclear fission
1
14
14
1
A) 0 n + 7 N → 6 C + 1 H
11) nuclear fussion
12) alpha emission
10)
11)
22
22
0
B) 11 Na → 10 Ne + 1 e
13) beta emission
14
0
14
7 N + -1 e → 6 C
C)
14) positron emission
12)
13)
14)
40
40
0
D) 19 K → 20 Ca + -1 e
1
2
3
4
E) 1 H + 1 H → 2 He + 0 n
238
234
4
92 U → 90 Th + 2 He
F)
235
1
139
94
1
G) 92 U + 0 n → 56 Ba + 36 Kr + 3 0 n
2
Answer Key
Testname: WKST_IC_NUCHEM
1) A
2) B
3) C
4) D
5) B
6) D
7) B
8)
9)
10) G
11) E
12) F
13) D
14) B
3