Nuclear Blast
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
a
p
h
a
d
c
a
Radioactive ___ of an atomic nucleus that is accompanied by the emission of an ___ particle
2.
h
a
f
-
f
e
The time required for something to fall to ___ its initial value
3.
r
a
d
s
o
o
p
e
A ___ isotope of an element
4.
t
r
n
s
m
u
t
t
o
The change of one chemical element into another
5.
i
n
z
a
t
o
n
The condition of being dissociated into ions
6.
s
u
b
a
o
m
c
p
a
r
t
l
A body having finite mass and internal structure but negligible dimensions (plural)
7.
a
m
i
c
n
u
m
e
The order of an element in Mendeleyev's table of the elements
8.
i
o
o
e
s
One of two or more atoms with the same atomic number but with different numbers of neutrons (plural)
9.
t
a
c
r
An investigator who is employed to find missing persons or missing goods
10.
b
e
t
a
d
c
Radioactive ___ of an atomic nucleus that is accompanied by the emission of a ___ particle
11.
r
a
d
o
a
t
i
v
i
The spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
12.
r
a
o
A radioactive gaseous element formed by the disintegration of radium
13.
b
e
t
p
a
r
i
c
A high-speed electron or positron emitted in the decay of a radioactive isotope
14.
n
e
u
t
n
An elementary particle with 0 charge and mass about equal to a proton
15.
r
a
d
u
An intensely radioactive metallic element that occurs in minute amounts in uranium ores
16.
e
l
e
c
n
An elementary particle with negative charge
17.
n
c
l
e
a
e
n
e
y
The ___ released by a ___ reaction
18.
c
o
l
t
A hard ferromagnetic silver-white bivalent or trivalent metallic element
19.
e
a
a
t
i
n
Something that is emitted or radiated
20.
n
u
c
l
e
Center of an atom or a cell
21.
u
r
a
i
m
A heavy toxic silvery-white radioactive metallic element
23.
p
o
s
i
o
An elementary particle with ___ charge