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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. 
Which of the following formulas represents an ionic compound?
a.
PClmc001-1.jpg
b.
BaImc001-2.jpg
c.
CSmc001-3.jpg
d.
Nmc001-4.jpgOmc001-5.jpg
 

 2. 
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.
lose electrons and form a cation
d.
gain protons and form an anion
 

 3. 
When Group 2A elements form ions, they
a.
gain two electrons.
b.
lose two protons.
c.
lose two electrons.
d.
gain two protons.
 

 4. 
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.
pure substance
c.
an element
b.
homogenous mixture
d.
heterogenous mixture
 

 5. 
What is the correct formula for barium chlorate?
a.
Ba(ClOmc005-1.jpg)mc005-2.jpg
b.
Ba(ClOmc005-3.jpg)mc005-4.jpg
c.
BaClmc005-5.jpg
d.
BaClO
 

 6. 
In which of the following is the number of neutrons correctly represented?
a.
mc006-1.jpgU has 146 neutrons.
b.
mc006-2.jpgF has 0 neutrons.
c.
mc006-3.jpgMg has 24 neutrons.
d.
mc006-4.jpgAs has 108 neutrons.
 

 7. 
How do atoms achieve full valence energy levels in single covalent bonds?
a.
Two atoms gain electrons and one element loses electrons while becoming charged.
b.
Two atoms transfer electrons in a sea of mobile electrons
c.
Two atoms share two electrons.
d.
One atom completely loses two electrons to the other atom in the bond.
 

 8. 
Which set of chemical name and chemical formula for the same compound is correct?
a.
aluminum fluorate, AlFmc008-1.jpg
b.
tin(IV) bromide, Snmc008-2.jpgBr
c.
iron(III) oxide, Femc008-3.jpgOmc008-4.jpg
d.
potassium chloride, Kmc008-5.jpgClmc008-6.jpg
 

 9. 
Which of the folloiwng shows a correct Lewis dot structure for the corresponding element?
a.
mc009-1.jpg
c.
mc009-3.jpg
b.
mc009-2.jpg
d.
mc009-4.jpg
 

 10. 
How many valence electrons does a helium atom have?
a.
3
b.
4
c.
2
d.
5
 

 11. 
How many valence electrons are in a silicon atom?
a.
2
b.
6
c.
8
d.
4
 

 12. 
Which of the following compounds is NOT an ionic compound?
a.
NaCl
c.
Li(NO3)
b.
MgBr2
d.
CO2
 

 13. 
Which of the following is the correct name for Nmc013-1.jpgOmc013-2.jpg?
a.
nitrous oxide
b.
nitrate oxide
c.
nitrogen dioxide
d.
dinitrogen pentoxide
 

 14. 
In which of the following is the name and formula given correctly?
a.
sodium oxide, NaO
b.
tin (IV) fluoride, SnFmc014-1.jpg
c.
cobaltous chloride, CoClmc014-2.jpg
d.
barium nitride, BaN
 

 15. 
Which of the following best describes Ca+2?
a.
Ca+2 is an anion because it has gained two electrons
c.
Ca+2 is a cation because it has gained 2 electrons
b.
Ca+2 is an anion because it has lost two electrons
d.
Ca+2 is a cation because it has lost two electrons
 

 16. 
Which of the following correctly provides the names and formulas of polyatomic ions?
a.
nitrite: NOmc016-1.jpg; nitrate: NOmc016-2.jpgmc016-3.jpg
b.
sulfite: Smc016-4.jpg; sulfate: SOmc016-5.jpgmc016-6.jpg
c.
carbonate: HCOmc016-7.jpgmc016-8.jpg; bicarbonate: COmc016-9.jpgmc016-10.jpg
d.
chromate: CrOmc016-11.jpgmc016-12.jpg; dichromate: Crmc016-13.jpgOmc016-14.jpgmc016-15.jpg
 

 17. 
Which of the following is considered a physical property of a substance?
a.
reaction with an acid
b.
malleability
c.
products of decomposition
d.
ability to oxidize
 

 18. 
An example of an extensive property of matter is
a.
temperature.
b.
hardness.
c.
mass.
d.
pressure.
 

 19. 
How are chemical formulas of  ionic compounds generally written?
a.
anion on left, cation on right
b.
Roman numeral first, then anion, then cation
c.
subscripts first, then ions
d.
cation on left, anion on right
 

 20. 

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

 21. 
In the following compound: Iron (III) oxide, what does the roman numerals indicate?
a.
The charge of the cation is +3
c.
The charge of the anion is -3
b.
The charge of the anion is -2
d.
The charge of the cation is +2
 

 22. 
Choose the correct Lewis Dot Diagram for NaCl
a.
mc022-1.jpg
b.
mc022-2.jpg
c.
mc022-3.jpg
d.
mc022-4.jpg
 

 23. 
Which of the following is a correct Lewis Dot Ion structure for potassium chloride?
a.
mc023-1.jpg
b.
mc023-2.jpg
c.
mc023-3.jpg
d.
mc023-4.jpg
 

 24. 
As wavelength increases, what happens to Frequency and Energy?
a.
Frequency decreases, Energy increases
c.
Frequency increases, Energy decreases
b.
Both Increase
d.
Both Decrease
 

 25. 
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.
4.57 x 10-7 Hz
c.
1.97 x 1014 Hz
b.
4.57 x 1014 Hz
d.
4.57 x 10-6 Hz
 

 26. 
Why do atoms share electrons in covalent bonds?
a.
to become ions and attract each other
b.
for nonmetals to attain a full valence energy level and become stable
c.
to become more polar
d.
for metals and nonmetals to attain a full valence energy level and become stable
 

 27. 
Which of the following correctly provides the name of the element, the symbol for the ion, and the name of the ion?
a.
zinc, Znmc027-1.jpg, zincate ion
b.
sulfur, Smc027-2.jpg, sulfide ion
c.
copper, Cumc027-3.jpg, carbonous ion
d.
fluorine, Fmc027-4.jpg, fluoride ion
 

 28. 
A sodium atom (Na) and a sodium ion (Na+) must have the same number of -
a.
protons
c.
electrons
b.
None of the above
d.
Both protons and electrons
 

 29. 
Which of the following is a possible compound formed from Cu+3 and NO3-1?
a.
Cu(NO3)3
c.
Cu2(NO3)
b.
Cu3(NO2)
d.
Cu(NO)
 

 30. 
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.
the unusual location of the free electrons
d.
ionic attraction and repulsion
 

 31. 
Which of the following is true about the composition of ionic compounds?
a.
They are composed of anions only.
b.
They are composed of anions and cations.
c.
They are composed of cations only.
d.
They are formed from two or more nonmetallic elements.
 

 32. 
Which of the following would complete an ionic bond with Calcium (Ca)?
a.
K
c.
O
b.
Ga
d.
Fe
 

 33. 
What is the formula of a compound with aluminum oxide?
a.
AlOmc033-1.jpg
b.
Almc033-2.jpgOmc033-3.jpg
c.
Almc033-4.jpgO
d.
AlO
 

 34. 
Which of the following elements forms an ion with a 1– charge?
a.
fluorine
b.
sodium
c.
hydrogen
d.
potassium
 

 35. 
How many electrons does barium have to give up to achieve a noble-gas electron configuration?
a.
2
b.
3
c.
4
d.
1
 



 
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