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

 2. 
Which of the folloiwng shows a correct Lewis dot structure for the corresponding element?
a.
mc002-1.jpg
c.
mc002-3.jpg
b.
mc002-2.jpg
d.
mc002-4.jpg
 

 3. 
Which of the following would complete an ionic bond with Calcium (Ca)?
a.
K
c.
Ga
b.
Fe
d.
O
 

 4. 
Why do atoms share electrons in covalent bonds?
a.
for nonmetals to attain a full valence energy level and become stable
b.
to become more polar
c.
to become ions and attract each other
d.
for metals and nonmetals to attain a full valence energy level and become stable
 

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

 6. 
Which of the following elements forms an ion with a 1– charge?
a.
fluorine
b.
potassium
c.
hydrogen
d.
sodium
 

 7. 

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

 8. 
How many valence electrons does a helium atom have?
a.
4
b.
5
c.
3
d.
2
 

 9. 
Which of the following formulas represents an ionic compound?
a.
CSmc009-1.jpg
b.
Nmc009-2.jpgOmc009-3.jpg
c.
BaImc009-4.jpg
d.
PClmc009-5.jpg
 

 10. 
Which of the following correctly provides the name of the element, the symbol for the ion, and the name of the ion?
a.
copper, Cumc010-1.jpg, carbonous ion
b.
fluorine, Fmc010-2.jpg, fluoride ion
c.
zinc, Znmc010-3.jpg, zincate ion
d.
sulfur, Smc010-4.jpg, sulfide ion
 

 11. 
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.
anion on left, cation on right
d.
subscripts first, then ions
 

 12. 
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 cations only.
c.
They are composed of anions only.
d.
They are composed of anions and cations.
 

 13. 
Which set of chemical name and chemical formula for the same compound is correct?
a.
iron(III) oxide, Femc013-1.jpgOmc013-2.jpg
b.
potassium chloride, Kmc013-3.jpgClmc013-4.jpg
c.
tin(IV) bromide, Snmc013-5.jpgBr
d.
aluminum fluorate, AlFmc013-6.jpg
 

 14. 
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
 

 15. 
What is the correct formula for barium chlorate?
a.
BaClmc015-1.jpg
b.
BaClO
c.
Ba(ClOmc015-2.jpg)mc015-3.jpg
d.
Ba(ClOmc015-4.jpg)mc015-5.jpg
 

 16. 
How many electrons does barium have to give up to achieve a noble-gas electron configuration?
a.
4
b.
1
c.
2
d.
3
 

 17. 
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.
One atom completely loses two electrons to the other atom in the bond.
d.
Two atoms gain electrons and one element loses electrons while becoming charged.
 

 18. 
In which of the following is the number of neutrons correctly represented?
a.
mc018-1.jpgU has 146 neutrons.
b.
mc018-2.jpgAs has 108 neutrons.
c.
mc018-3.jpgF has 0 neutrons.
d.
mc018-4.jpgMg has 24 neutrons.
 

 19. 
Which of the following is considered a physical property of a substance?
a.
malleability
b.
reaction with an acid
c.
products of decomposition
d.
ability to oxidize
 

 20. 
Which of the following is a possible compound formed from Cu+3 and NO3-1?
a.
Cu(NO)
c.
Cu(NO3)3
b.
Cu2(NO3)
d.
Cu3(NO2)
 

 21. 
Which of the following is a correct Lewis Dot Ion structure for potassium chloride?
a.
mc021-1.jpg
b.
mc021-2.jpg
c.
mc021-3.jpg
d.
mc021-4.jpg
 

 22. 
What causes NH3 to have it’s shape, according to VSEPR theory?
a.
the unusual location of the free electrons
b.
ionic attraction and repulsion
c.
interaction between the fixed orbitals of the unshared pairs of hydrogen
d.
repulsive forces between unshared pairs of electrons and bonds
 

 23. 
In which of the following is the name and formula given correctly?
a.
tin (IV) fluoride, SnFmc023-1.jpg
b.
barium nitride, BaN
c.
sodium oxide, NaO
d.
cobaltous chloride, CoClmc023-2.jpg
 

 24. 
In the following compound: Iron (III) oxide, what does the roman numerals indicate?
a.
The charge of the cation is +2
c.
The charge of the cation is +3
b.
The charge of the anion is -2
d.
The charge of the anion is -3
 

 25. 
What is the formula of a compound with aluminum oxide?
a.
AlO
b.
Almc025-1.jpgO
c.
AlOmc025-2.jpg
d.
Almc025-3.jpgOmc025-4.jpg
 

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

 27. 
When a metal reacts with a nonmetals, the metal tends to -
a.
gain protons and form an anion
c.
gain electrons and from an anion
b.
lose protons and form a cation
d.
lose electrons and form a cation
 

 28. 
As wavelength increases, what happens to Frequency and Energy?
a.
Frequency increases, Energy decreases
c.
Both Increase
b.
Both Decrease
d.
Frequency decreases, Energy increases
 

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

 31. 
A sodium atom (Na) and a sodium ion (Na+) must have the same number of -
a.
electrons
c.
protons
b.
Both protons and electrons
d.
None of the above
 

 32. 
Which of the following is the correct name for Nmc032-1.jpgOmc032-2.jpg?
a.
dinitrogen pentoxide
b.
nitrate oxide
c.
nitrous oxide
d.
nitrogen dioxide
 

 33. 
How many valence electrons are in a silicon atom?
a.
4
b.
8
c.
6
d.
2
 

 34. 
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 10-6 Hz
c.
4.57 x 1014 Hz
b.
4.57 x 10-7 Hz
d.
1.97 x 1014 Hz
 

 35. 
An example of an extensive property of matter is
a.
pressure.
b.
hardness.
c.
mass.
d.
temperature.
 



 
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