Question 1

What is the formula for lithium nitrite?

Accepted Answer

A)   LiNO2
B)   Li2NO2
C)   LiNO3
D)   Li2NO3
E)   LiNO4F) None of the above
G) B) and C)

Question 2

The substance, CaSe, is used in materials which are electron emitters. What is its name?

Accepted Answer

A)   calcium monoselenide
B)   calcium(II)  selenide
C)   calcium selenide
D)   calcium(I)  selenide
E)   calcium(II)  seleniumF) A) and C)
G) C) and D)

Question 3

The compound, (NH4) 2S, can be used in analysis for trace amounts of metals present in a sample. What is its name?

Accepted Answer

A)   ammonium sulfide
B)   diammonium sulfide
C)   ammonium sulfite
D)   ammonia(I)  sulfite
E)   ammonium(I)  sulfideF) A) and B)
G) A) and C)

Question 4

Name the three important "laws" that were accounted for by Dalton's atomic theory.

Accepted Answer

laws of conservation...

Question 5

Atoms of one element cannot be converted to another element by any known method.

Accepted Answer

A) True 
 B)False

Question 6

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Accepted Answer

A)   FeO
B)   Fe2O
C)   FeO3
D)   Fe2O5
E)   Fe2O3F) B) and D)
G) C) and D)

Question 7

Iodine pentafluoride reacts slowly with glass and violently with water. Determine its molecular mass.

Accepted Answer

A)   653.52 amu
B)   259.89 amu
C)   221.90 amu
D)   202.90 amu
E)   145.90 amuF) B) and C)
G) B) and E)

Question 8

The chemical symbol for potassium is:

Accepted Answer

A)   P
B)   Po
C)   Pt
D)   Pm
E)   KF) None of the above
G) C) and E)

Question 9

What is the name of the acid formed when HCN gas is dissolved in water?

Accepted Answer

A)   cyanic acid
B)   hydrocyanic acid
C)   cyanous acid
D)   hydrocyanous acid
E)   hydrogen cyanideF) B) and C)
G) B) and D)

Question 10

In nature, some elements exist as molecules, while others do not.

Accepted Answer

A) True 
 B)False

Question 11

. If the compositions of the two compounds are consistent with the law of multiple proportions, which of the following compositions could be that of compound 2?

Accepted Answer

A)   23.4 mass % A; 76.6 mass % B
B)   30.4 mass % A; 69.6 mass % B
C)   33.3 mass % A; 66.7 mass % B
D)   53.3 mass % A; 46.7 mass % B
E)   73.3 mass % A; 26.7 mass % BF) B) and D)
G) None of the above

Question 12

Barium fluoride is used in embalming and in glass manufacturing. Which of the following gives the formula and bonding for barium fluoride?

Accepted Answer

A)   BaF2, ionic compound
B)   BaF2, covalent compound
C)   BaF, ionic compound
D)   BaF, covalent compound
E)   Ba2F, ionic compoundF) All of the above
G) A) and E)

Question 13

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Accepted Answer

A) True 
 B)False

Question 14

Millikan's oil-drop experiment

Accepted Answer

A)   established the charge on an electron.
B)   showed that all oil drops carried the same charge.
C)   provided support for the nuclear model of the atom.
D)   suggested that some oil drops carried fractional numbers of electrons.
E)   suggested the presence of a neutral particle in the atom.F) A) and B)
G) C) and D)

Question 15

Sodium peroxide is an oxidizer used to bleach animal and vegetable fibers. What is its formula?

Accepted Answer

A)   NaO
B)   NaO2
C)   Na2O2
D)   Na2O
E)   NaH2O2F) B) and D)
G) C) and E)

Question 16

Which of the following compounds is ionic?

Accepted Answer

A)   PF3
B)   CS2
C)   HCl
D)   SO2
E)   MgCl2F) C) and D)
G) B) and C)

Question 17

What is the name of BBr3?

Accepted Answer

A)   boron bromide
B)   boric bromide
C)   boron tribromide
D)   tribromoboride
E)   bromine triborideF) A) and E)
G) B) and D)

Question 18

A column of the periodic table is called a

Accepted Answer

A)   group.
B)   period.
C)   isotopic mixture.
D)   pillar.
E)   shell.F) C) and E)
G) D) and E)

Question 19

What is the name of IF7?

Accepted Answer

A)   iodine fluoride
B)   iodic fluoride
C)   iodine heptafluoride
D)   heptafluoroiodide
E)   heptafluorine iodideF) B) and C)
G) A) and C)

Question 20

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Accepted Answer

A)   hydrochloric acid
B)   perchloric acid
C)   chloric acid
D)   chlorous acid
E)   hydrochlorate acidF) A) and B)
G) A) and C)

Exam 2: The Components of Matter

The chemical symbol for potassium is:

Correct AnswerverifiedShow Answer

Name the three important "laws" that were accounted for by Dalton's atomic theory.

Correct Answerverifiedlaws of conservation...View AnswerShow Answer

Barium fluoride is used in embalming and in glass manufacturing. Which of the following gives the formula and bonding for barium fluoride?

Correct AnswerverifiedShow Answer

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Correct AnswerverifiedShow Answer

Atoms of one element cannot be converted to another element by any known method.

Correct AnswerverifiedShow Answer

In nature, some elements exist as molecules, while others do not.

Correct AnswerverifiedShow Answer

What is the name of the acid formed when HCN gas is dissolved in water?

Correct AnswerverifiedShow Answer

The substance, CaSe, is used in materials which are electron emitters. What is its name?

Correct AnswerverifiedShow Answer

What is the name of BBr3?

Correct AnswerverifiedShow Answer

What is the formula for lithium nitrite?

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The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

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The compound, (NH4) 2S, can be used in analysis for trace amounts of metals present in a sample. What is its name?

Correct AnswerverifiedShow Answer

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Correct AnswerverifiedShow Answer

Millikan's oil-drop experiment

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What is the name of IF7?

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Which of the following compounds is ionic?

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Iodine pentafluoride reacts slowly with glass and violently with water. Determine its molecular mass.

Correct AnswerverifiedShow Answer

. If the compositions of the two compounds are consistent with the law of multiple proportions, which of the following compositions could be that of compound 2?

Correct AnswerverifiedShow Answer

Sodium peroxide is an oxidizer used to bleach animal and vegetable fibers. What is its formula?

Correct AnswerverifiedShow Answer

A column of the periodic table is called a

Correct AnswerverifiedShow Answer

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laws of conservation...
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What is the name of BBr₃?

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The compound, (NH₄) ₂S, can be used in analysis for trace amounts of metals present in a sample. What is its name?

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What is the name of IF₇?

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