Name ____________________________________________________________________________________
Nuclear Chemistry Worksheet
Identify the following as alpha, beta, gamma, or positron.
1.
0
1
e
2.
0
1
e
3.
4
2
He
4.
0
0
γ
5. Nuclear decay with no mass and no charge
6. An electron
7. Antimatter
8. Most damaging nuclear decay to the human body
9. Nuclear decay that can be stopped by skin or paper.
10. Nuclear decay that can be stopped by aluminum.
Name ____________________________________________________________________________________
Nuclear Chemistry Worksheet
Identify the following as alpha, beta, gamma, or positron.
1.
0
1
e
2.
0
1
e
5. Nuclear decay with no mass and no charge
6. An electron
7. Antimatter
8. Most damaging nuclear decay to the human body
9. Nuclear decay that can be stopped by skin or paper.
10. Nuclear decay that can be stopped by aluminum.
3.
4
2
He
4.
0
0
γ
Complete the following nuclear equations.
K →
12.
239
Pu
94
→
4
He
2
+ __________
11.
42
19
13.
9
4
Be
→
9
4
Be + __________
14.
235
92 U
→ _________ +
15.
6
3
Li
→
4
2
He + __________
16.
142
Ba
56
→ __________ +
0
-1
e +
__________
231
90
0
+1
Th
e
17. How much of a 20.0 g sample of 198Au is left after 5.40 days if its half-life is 2.70 days?
18. There are 8.0 g of 131I left after 24.21 days. How many grams were in the original sample if its half-life is 8.07 days?
Complete the following nuclear equations.
K →
12.
239
Pu
94
→
4
He
2
+ __________
11.
42
19
13.
9
4
Be
→
9
4
Be + __________
14.
235
92 U
→ _________ +
15.
6
3
Li
→
4
2
He + __________
16.
142
Ba
56
→ __________ +
0
-1
e +
__________
231
90
0
+1
Th
e
19. How much of a 20.0 g sample of 198Au is left after 5.40 days if its half-life is 2.70 days?
20. There are 8.0 g of 131I left after 24.21 days. How many grams were in the original sample if its half-life is 8.07 days?