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Unit 5 OnLevel  Mulitple choice Test

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

 1. 
In which of the following is the name and formula given correctly?
a.
cobaltous chloride, CoClmc001-1.jpg
b.
tin (IV) fluoride, SnFmc001-2.jpg
c.
barium nitride, BaN
d.
sodium oxide, NaO
 

 2. 
Which of the following is true about the composition of ionic compounds?
a.
They are formed from two or more nonmetallic elements.
b.
They are composed of anions and cations.
c.
They are composed of anions only.
d.
They are composed of cations only.
 

 3. 
A sodium atom (Na) and a sodium ion (Na+) must have the same number of -
a.
None of the above
c.
protons
b.
Both protons and electrons
d.
electrons
 

 4. 
Which of the following is the correct name for Nmc004-1.jpgOmc004-2.jpg?
a.
nitrous oxide
b.
nitrogen dioxide
c.
nitrate oxide
d.
dinitrogen pentoxide
 

 5. 
Which of the following correctly provides the names and formulas of polyatomic ions?
a.
sulfite: Smc005-1.jpg; sulfate: SOmc005-2.jpgmc005-3.jpg
b.
carbonate: HCOmc005-4.jpgmc005-5.jpg; bicarbonate: COmc005-6.jpgmc005-7.jpg
c.
nitrite: NOmc005-8.jpg; nitrate: NOmc005-9.jpgmc005-10.jpg
d.
chromate: CrOmc005-11.jpgmc005-12.jpg; dichromate: Crmc005-13.jpgOmc005-14.jpgmc005-15.jpg
 

 6. 
How many valence electrons are in a silicon atom?
a.
4
b.
2
c.
6
d.
8
 

 7. 
Which of the following is considered a physical property of a substance?
a.
products of decomposition
b.
reaction with an acid
c.
malleability
d.
ability to oxidize
 

 8. 
In which of the following is the number of neutrons correctly represented?
a.
mc008-1.jpgF has 0 neutrons.
b.
mc008-2.jpgAs has 108 neutrons.
c.
mc008-3.jpgU has 146 neutrons.
d.
mc008-4.jpgMg has 24 neutrons.
 

 9. 
Which of the following is a correct Lewis Dot structure for potassium chloride?
a.
mc009-1.jpg
b.
mc009-2.jpg
c.
mc009-3.jpg
d.
mc009-4.jpg
 

 10. 
What causes NH3 to have it’s shape, according to VSEPR theory?
a.
interaction between the fixed orbitals of the unshared pairs of hydrogen
b.
repulsive forces between unshared pairs of electrons and bonds
c.
ionic attraction and repulsion
d.
the unusual location of the free electrons
 

 11. 
Which of the following is a possible compound formed from Cu+3 and NO3-1?
a.
Cu(NO3)3
c.
Cu3(NO2)
b.
Cu(NO)
d.
Cu2(NO3)
 

 12. 
Which set of chemical name and chemical formula for the same compound is correct?
a.
tin(IV) bromide, SnBrmc012-1.jpg
b.
iron(II) oxide, Femc012-2.jpgOmc012-3.jpg
c.
aluminum fluorate, AlFmc012-4.jpg
d.
potassium chloride, Kmc012-5.jpgClmc012-6.jpg
 

 13. 
Why do atoms share electrons in covalent bonds?
a.
to become more polar
b.
to increase their atomic numbers
c.
to become ions and attract each other
d.
to attain a full valence energy level and become stable
 

 14. 

What does the 3 represent in the following electron configuration, 1s2 2s2 2p6 3s2 3p6?
a.
Electrons
c.
Orbitals
b.
Sublevel
d.
Energy level of electrons
 

 15. 
How are chemical formulas of  ionic compounds generally written?
a.
Roman numeral first, then anion, then cation
b.
cation on left, anion on right
c.
subscripts first, then ions
d.
anion on left, cation on right
 

 16. 
Which of the folloiwng shows a correct Lewis dot structure for the corresponding element?
a.
mc016-1.jpg
c.
mc016-3.jpg
b.
mc016-2.jpg
d.
mc016-4.jpg
 

 17. 
When a metal reacts with a nonmetals, the metal tends to -
a.
lose protons and form a cation
c.
gain electrons and from an anion
b.
gain protons and form an anion
d.
lose electrons and form a cation
 

 18. 
What is the correct formula for barium chlorate?
a.
Ba(ClOmc018-1.jpg)mc018-2.jpg
b.
Ba(ClOmc018-3.jpg)mc018-4.jpg
c.
BaClmc018-5.jpg
d.
BaClO
 

 19. 
Brass is an alloy made of copper and zinc.  To make brass copper is mixed with zinc when both metals are at the liquid state.  During the mixing process no chemical reaction takes place. After mixing, brass appears to be uniform throughout.  Brass must be a(n):
a.
an element
c.
heterogenous mixture
b.
pure substance
d.
homogenous mixture
 

 20. 
Which of the following formulas represents an ionic compound?
a.
CSmc020-1.jpg
b.
BaImc020-2.jpg
c.
Nmc020-3.jpgOmc020-4.jpg
d.
PClmc020-5.jpg
 

 21. 
One of the wavelengths emitted by hydrogen atoms is
6.56 x 10-7 m. Calculate the frequency if the speed of light is 3.00 x 108 m/s..
a.
1.97 x 1014 Hz
c.
4.57 x 10-7 Hz
b.
4.57 x 10-6 Hz
d.
4.57 x 1014 Hz
 

 22. 
Which of the following correctly provides the name of the element, the symbol for the ion, and the name of the ion?
a.
copper, Cumc022-1.jpg, carbonous ion
b.
zinc, Znmc022-2.jpg, zincate ion
c.
fluorine, Fmc022-3.jpg, fluoride ion
d.
sulfur, Smc022-4.jpg, sulfide ion
 

 23. 
How many valence electrons does a helium atom have?
a.
5
b.
4
c.
2
d.
3
 

 24. 
How do atoms achieve full valence energy levels in single covalent bonds?
a.
Two atoms share two electrons.
b.
Two atoms transfer electrons in a sea of mobile electrons
c.
Two atoms gain electrons and one element loses electrons while becoming charged.
d.
One atom completely loses two electrons to the other atom in the bond.
 

 25. 
Which of the following would complete an ionic bond with Calcium (Ca)?
a.
Ga
c.
Fe
b.
O
d.
K
 

 26. 
Which of the following compounds is NOT an ionic compound?
a.
NaCl
c.
CO2
b.
Li(NO3)
d.
MgBr2
 

 27. 
Which of the following best describes Ca+2?
a.
Ca+2 is an anion because it has lost two electrons
c.
Ca+2 is a cation because it has lost two electrons
b.
Ca+2 is a cation because it has gained 2 electrons
d.
Ca+2 is an anion because it has gained two electrons
 

 28. 
When Group 2A elements form ions, they
a.
gain two electrons.
b.
lose two protons.
c.
gain two protons.
d.
lose two electrons.
 

 29. 
Choose the correct Lewis Dot Diagram for NaCl
a.
mc029-1.jpg
b.
mc029-2.jpg
c.
mc029-3.jpg
d.
mc029-4.jpg
 

 30. 
In the following compound: Iron (III) oxide, what do the roman numerals indicate?
a.
The charge of the anion is -2
c.
The charge of the cation is +2
b.
The charge of the anion is -3
d.
The charge of the cation is +3
 

 31. 
An example of an extensive property of matter is
a.
mass.
b.
temperature.
c.
hardness.
d.
pressure.
 

 32. 
How many electrons does barium have to give up to achieve a noble-gas electron configuration?
a.
2
b.
1
c.
3
d.
4
 

 33. 
As wavelength increases, what happens to Frequency and Energy?
a.
Frequency increases, Energy decreases
c.
Both Increase
b.
Frequency decreases, Energy increases
d.
Both Decrease
 

 34. 
What is the formula unit of aluminum oxide?
a.
Almc034-1.jpgO
b.
Almc034-2.jpgOmc034-3.jpg
c.
AlOmc034-4.jpg
d.
AlO
 

 35. 
Which of the following elements forms an ion with a 1– charge?
a.
sodium
b.
hydrogen
c.
potassium
d.
fluorine
 



 
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