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CHEM 1211 Module One Multiple Choice Makeup   10 points

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

 1. 

What is the correct symbol for potassium?
a.
K
b.
P
c.
Po
d.
Pt
e.
Ta
 

 2. 

What is the name of the element with the symbol Pb?
a.
iron
b.
lead
c.
phosphorus
d.
plutonium
e.
rubidium
 

 3. 

Which statement concerning NaCl is true?
a.
NaCl has properties similar to sodium metal and chlorine gas.
b.
NaCl is a homogeneous mixture.
c.
NaCl is a heterogeneous mixture.
d.
The percentage of Na in NaCl is dependent on where the sample is obtained.
e.
NaCl is composed of ions, which are electrically charged atoms.
 

 4. 

All of the following statements are true EXCEPT
a.
sodium is represented by the symbol Na.
b.
fluorine is represented by the symbol F.
c.
magnesium is represented by the symbol Mg.
d.
carbon is represented by the symbol Ca.
e.
tin is represented by the symbol Sn.
 

 5. 

Which of the following is a heterogeneous mixture?
a.
sodium chloride dissolved in water
b.
gasoline
c.
antifreeze (a mixture of water and ethylene glycol)
d.
dijon mustard
e.
diet soda
 

 6. 

Approximately how many elements are found in nature?
a.
27
b.
62
c.
90
d.
113
e.
144
 

 7. 

Which of the following substances is not an element?
a.
NO
b.
Ca
c.
Na
d.
B
e.
Xe
 

 8. 

What is the name of the element with the symbol B?
a.
barium
b.
beryllium
c.
borax
d.
bromine
e.
boron
 

 9. 

A pure substance that is composed of two or more different elements is
a.
a chemical compound.
b.
a multi-element.
c.
an atom.
d.
a heterogeneous mixture.
e.
a homogeneous mixture.
 

 10. 

The molecular model depicts a molecule composed of carbon (black), oxygen (gray), and hydrogen (white. atoms. What is the correct molecular formula?

11m1retest_files/i0110000.jpg
a.
CHO
b.
C6H6O2
c.
C6H7O
d.
C7H6O
e.
C7H6O2
 

 11. 

All of the following are examples of physical properties EXCEPT
a.
the density of neon gas.
b.
the conductivity of copper wire.
c.
the boiling point of water.
d.
the frying of an egg.
e.
the density of mercury metal.
 

 12. 

All of the following are examples of chemical change EXCEPT
a.
the condensation of steam.
b.
the rusting of iron.
c.
the combustion of propane gas.
d.
the tarnishing of silver.
e.
the decomposition of water to hydrogen gas and oxygen gas.
 

Numeric Response
 

 13. 

Enter your score on the M-1 Exam for Multiple Choice below (10/10), so that your exam may be adjusted for improvement. If your score is not as good, this test will be ignored.

 



 
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