10 minutes maximum! Can you do it in 5?

1-6: The following questions are about ionising radiation.

Which type of radiation...

  

 1. ...can only travel a few centimeters in air?

2. ...is only stopped by thick lead?

3. ..has a negative charge?

4. ..has a mass of 4 units and a charge of +2?

5. ..has no charge and no mass?

6. ...can pass through paper?

7. In this decay equation, what are the missing numbers x and y?

 
14
 C
14
 N
+
y

ß-
6
x
-1
  • A. x=5, y=1
  • B. x=5, y=0
  • C. x=7, y=1
  • D. x=7, y=0

8. When Uranium decays it creates Thorium (Th) and emits an alpha particle(α).

Which one of the following equations correctly shows the balanced equation?
A.
235
 U
231
 Th
+
4

α
92
90
2
B.
235
 U
233
 Th
+
2

α
92
88
4
C.
235
 U
231
 Th
+
4

α
92
92
2
D.
235
 U
231
 Th
+
2

α
92
90
4

9. Which of these is the correct notation for gamma radiation?

A.
0
 γ
1
B.
0
 γ
-1
C.
0
 γ
0
D.
1
 γ
0

10. An oxygen isotope emits a ß- particle. This means ..

  • A. ..the mass (nucleon) number will decrease by 1, the atomic number will increase by 1.
  • B. ..the mass (nucleon) number will decrease by 1, the atomic number will stay the same.
  • C. ..the mass (nucleon) number will stay the same, the atomic number will increase by 1.
  • D. ..the mass (nucleon) number will stay the same, the atomic number will decrease by 1.