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Parts of an atom

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 
A positively charged particle  is a(n)
a.
proton.
c.
electron.
b.
neutron.
d.
positron.
 

2. 
A nuclear particle with no electrical charge, is called a(n)
a.
nuclide.
c.
electron.
b.
neutron.
d.
isotope.
 

3. 
The nucleus of most atoms is composed of
a.
tightly packed protons.
c.
tightly packed protons and neutrons.
b.
tightly packed neutrons.
d.
loosely connected protons and electrons.
 

4. 
Protons have
a.
negative charges.
c.
no charges.
b.
positive charge
d.
no mass.
 

5. 
The atomic number of oxygen, 8, indicates that there are eight
a.
protons in the nucleus of an oxygen atom.
b.
oxygen nuclides.
c.
neutrons outside the oxygen atom's nucleus.
d.
energy levels in the oxygen atom's nucleus.
 

6. 
The total number of protons and neutrons in the nucleus of an atom is its
a.
atomic number.
c.
mass number.
b.
Avogadro constant.
d.
number of neutrons.
 

7. 
The total number of energy levels for Be, berylium is
a.
1
c.
3
b.
2
d.
4
 

8. 
The total number of electron on the first energy level is
a.
1
c.
3
b.
2
d.
4
 

9. 
The total number of electrons for the second energy level is
a.
2
c.
18
b.
8
d.
32
 

10. 
The total number of electrons for the third energy level is
a.
2
c.
18
b.
8
d.
32
 

11. 
How many energy levels does S, sulfur have?
a.
1
c.
3
b.
2
d.
4
 

12. 
The rows that go up and down are called
a.
periods
c.
positions
b.
groups
d.
electric
 

13. 
The rows that go across are called the
a.
periods
c.
families
b.
groups
d.
positions
 

14. 
How many protons does C, carbon have?
a.
6
c.
12
b.
16
d.
8
 

15. 
The total number of electrons equals the number of
a.
energy levels
c.
protons
b.
atomi mass
d.
neutrons
 



 
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