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

 2. 
In which of the following is the number of neutrons correctly represented?
a.
mc002-1.jpgF has 0 neutrons.
b.
mc002-2.jpgAs has 108 neutrons.
c.
mc002-3.jpgU has 146 neutrons.
d.
mc002-4.jpgMg has 24 neutrons.
 

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

 4. 
What causes NH3 to have it’s shape, according to VSEPR theory?
a.
ionic attraction and repulsion
b.
interaction between the fixed orbitals of the unshared pairs of hydrogen
c.
the unusual location of the free electrons
d.
repulsive forces between unshared pairs of electrons and bonds
 

 5. 
Which of the following formulas represents an ionic compound?
a.
Nmc005-1.jpgOmc005-2.jpg
b.
BaImc005-3.jpg
c.
PClmc005-4.jpg
d.
CSmc005-5.jpg
 

 6. 
Which of the folloiwng shows a correct Lewis dot structure for the corresponding element?
a.
mc006-1.jpg
c.
mc006-3.jpg
b.
mc006-2.jpg
d.
mc006-4.jpg
 

 7. 
An example of an extensive property of matter is
a.
pressure.
b.
mass.
c.
temperature.
d.
hardness.
 

 8. 
Which of the following would complete an ionic bond with Calcium (Ca)?
a.
Fe
c.
K
b.
Ga
d.
O
 

 9. 
Which of the following is the correct name for Nmc009-1.jpgOmc009-2.jpg?
a.
nitrous oxide
b.
dinitrogen pentoxide
c.
nitrogen dioxide
d.
nitrate oxide
 

 10. 
How are chemical formulas of  ionic compounds generally written?
a.
subscripts first, then ions
b.
anion on left, cation on right
c.
Roman numeral first, then anion, then cation
d.
cation on left, anion on right
 

 11. 
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 formed from two or more nonmetallic elements.
d.
They are composed of cations only.
 

 12. 
Which of the following correctly provides the names and formulas of polyatomic ions?
a.
nitrite: NOmc012-1.jpg; nitrate: NOmc012-2.jpgmc012-3.jpg
b.
sulfite: Smc012-4.jpg; sulfate: SOmc012-5.jpgmc012-6.jpg
c.
chromate: CrOmc012-7.jpgmc012-8.jpg; dichromate: Crmc012-9.jpgOmc012-10.jpgmc012-11.jpg
d.
carbonate: HCOmc012-12.jpgmc012-13.jpg; bicarbonate: COmc012-14.jpgmc012-15.jpg
 

 13. 
Which of the following elements forms an ion with a 1– charge?
a.
hydrogen
b.
potassium
c.
fluorine
d.
sodium
 

 14. 
How many valence electrons does a helium atom have?
a.
3
b.
4
c.
5
d.
2
 

 15. 
In the following compound: Iron (III) oxide, what does the roman numerals indicate?
a.
The charge of the anion is -2
c.
The charge of the anion is -3
b.
The charge of the cation is +3
d.
The charge of the cation is +2
 

 16. 
Which set of chemical name and chemical formula for the same compound is correct?
a.
aluminum fluorate, AlFmc016-1.jpg
b.
potassium chloride, Kmc016-2.jpgClmc016-3.jpg
c.
iron(III) oxide, Femc016-4.jpgOmc016-5.jpg
d.
tin(IV) bromide, Snmc016-6.jpgBr
 

 17. 
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.
heterogenous mixture
b.
an element
d.
homogenous mixture
 

 18. 
Which of the following is considered a physical property of a substance?
a.
malleability
b.
products of decomposition
c.
reaction with an acid
d.
ability to oxidize
 

 19. 
How do atoms achieve full valence energy levels in single covalent bonds?
a.
Two atoms transfer electrons in a sea of mobile electrons
b.
Two atoms share two 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.
 

 20. 
Which of the following correctly provides the name of the element, the symbol for the ion, and the name of the ion?
a.
sulfur, Smc020-1.jpg, sulfide ion
b.
zinc, Znmc020-2.jpg, zincate ion
c.
copper, Cumc020-3.jpg, carbonous ion
d.
fluorine, Fmc020-4.jpg, fluoride ion
 

 21. 
Why do atoms share electrons in covalent bonds?
a.
to become more polar
b.
for metals and nonmetals to attain a full valence energy level and become stable
c.
for nonmetals to attain a full valence energy level and become stable
d.
to become ions and attract each other
 

 22. 
When Group 2A elements form ions, they
a.
lose two protons.
b.
gain two electrons.
c.
lose two electrons.
d.
gain two protons.
 

 23. 
Which of the following compounds is NOT an ionic compound?
a.
CO2
c.
Li(NO3)
b.
MgBr2
d.
NaCl
 

 24. 
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 lost two electrons
b.
Ca+2 is an anion because it has lost two electrons
d.
Ca+2 is a cation because it has gained 2 electrons
 

 25. 
How many valence electrons are in a silicon atom?
a.
6
b.
2
c.
8
d.
4
 

 26. 
Which of the following is a possible compound formed from Cu+3 and NO3-1?
a.
Cu2(NO3)
c.
Cu(NO3)3
b.
Cu3(NO2)
d.
Cu(NO)
 

 27. 

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

 28. 
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.
4.57 x 10-6 Hz
b.
1.97 x 1014 Hz
d.
4.57 x 1014 Hz
 

 29. 
As wavelength increases, what happens to Frequency and Energy?
a.
Both Increase
c.
Frequency decreases, Energy increases
b.
Frequency increases, Energy decreases
d.
Both Decrease
 

 30. 
What is the formula of a compound with aluminum oxide?
a.
Almc030-1.jpgOmc030-2.jpg
b.
AlOmc030-3.jpg
c.
AlO
d.
Almc030-4.jpgO
 

 31. 
In which of the following is the name and formula given correctly?
a.
tin (IV) fluoride, SnFmc031-1.jpg
b.
cobaltous chloride, CoClmc031-2.jpg
c.
barium nitride, BaN
d.
sodium oxide, NaO
 

 32. 
Which of the following is a correct Lewis Dot Ion structure for potassium chloride?
a.
mc032-1.jpg
b.
mc032-2.jpg
c.
mc032-3.jpg
d.
mc032-4.jpg
 

 33. 
When a metal reacts with a nonmetals, the metal tends to -
a.
gain electrons and from an anion
c.
lose protons and form a cation
b.
gain protons and form an anion
d.
lose electrons and form a cation
 

 34. 
What is the correct formula for barium chlorate?
a.
BaClmc034-1.jpg
b.
Ba(ClOmc034-2.jpg)mc034-3.jpg
c.
BaClO
d.
Ba(ClOmc034-4.jpg)mc034-5.jpg
 

 35. 
Choose the correct Lewis Dot Diagram for NaCl
a.
mc035-1.jpg
b.
mc035-2.jpg
c.
mc035-3.jpg
d.
mc035-4.jpg
 



 
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