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WorksheetsAtomic Structure & Nuclear Chemistry
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
How many protons are in an atom with an atomic number of 20, an atomic mass of 45, and a charge of +2?
a)
20
b)
10
c)
2
d)
18
2.
How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
a)
34
b)
36
c)
2
d)
40
3.
What particle provided the positive charge for an atom?
a)
proton
b)
neutron
c)
electron
d)
nucleus
4.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
5.
How many neutrons will an atom have it has an atomic number of 26, an atomic mass of 58 and a charge of +3?
a)
26
b)
58
c)
32
d)
3
6.
The dense center region of an atom
a)
electron cloud
b)
core
c)
nucleus
d)
centrino
7.
Subatomic particle that determines the identity of the atom
a)
proton
b)
nucleus
c)
electron
d)
neutron
8.
An atom with an unequal number of protons and electrons is said to have (a) ___.
a)
no charge
b)
balance
c)
charge
d)
unbalance
9.
How many electrons would an atom of Krypton have?
a)
83.80
b)
36
c)
12
d)
none
10.
In the isotope name, Hydrogen-3, what does the 3 represent?
a)
charge
b)
mass
c)
atomic number
d)
number of electrons
11.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
12.
In order of most to least penetrating radiation we have
a)
Alpha , Beta, Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
13.
This type of reaction occurs when a heavy nucleus, such as U-235, splits into two or more parts. [KEY WORD: SPLIT]
a)
Fission
b)
Fusion
c)
Chain reaction
d)
synthesis
14.
How many protons and neutrons in 24X50 [Hint: Protons is the ATOMIC NUMBER or Number of the BOTTOM]
a)
P = 24 N = 50
b)
P = 24 N = 26
c)
P = 26 N = 24
d)
P = 50 N = 24
15.
What does alpha radiation emit?
a)
an electron
b)
a helium nucleus
c)
just energy
d)
none of the choices are correct
16.
If we start off with element 24X50 after an alpha decay we get another element Y that looks like
a)
22Y50
b)
22Y46
c)
20Y48
d)
26Y54
17.
Which type of nuclear radiation is being emitted here?
a)
alpha
b)
beta
c)
gamma
d)
none
18.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma
d)
none
19.
If we start off with element 24X50 after an beta decay we get another element Y that looks like
a)
23Y50
b)
22Y46
c)
25Y50
d)
24Y50
20.
What type of radiation was responsible for creating the Incredible Hulk?
a)
alpha radiation
b)
beta radiation
c)
gamma radiation
d)
positron radiation
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