Question 1

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)  Fe2O3 F) D) and E)
G) C) and E)

Question 2

The following charges on individual oil droplets were obtained during an experiment similar to Millikan's.Use them to determine a charge for the electron in coulombs (C),showing all your working.
Charges (C): -3.184 $\times$10-19;-4.776 $\times$ 10-19;-7.960 $\times$ 10-19

Accepted Answer

-1.59 <img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> 10<...

Question 3

The compound,P4S10,is used in the manufacture of safety matches.What is its name?

Accepted Answer

A)  phosphorus sulfide
B)  phosphoric sulfide
C)  phosphorus decasulfide
D)  tetraphosphorus decasulfideE) B) and D)
F) A) and D)

Question 4

Ionic compounds may carry a net positive or negative charge.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is a non-metal?

Accepted Answer

A)  lithium,Li,Z = 3
B)  bromine,Br,Z = 35
C)  mercury,Hg,Z = 80
D)  bismuth,Bi,Z = 83
E)  sodium,Na,Z = 11F) A) and C)
G) B) and E)

Question 6

J.J.Thomson studied cathode ray particles (electrons) and was able to measure the mass/charge ratio.His results showed that

Accepted Answer

A)  the mass/charge ratio varied as the cathode material was changed.
B)  the charge was always a whole-number multiple of some minimum charge.
C)  matter included particles much smaller than the atom.
D)  atoms contained dense areas of positive charge.
E)  atoms are largely empty space.F) B) and D)
G) None of the above

Question 7

Calcium hydroxide is used in mortar,plaster and cement.What is its formula?

Accepted Answer

A)  CaOH
B)  CaOH2
C)  Ca2OH
D)  Ca(OH) 2
E)  CaHO2 F) A) and C)
G) A) and B)

Question 8

The compound,BaO,absorbs water and carbon dioxide readily and is used to dry gases and organic solvents.What is its name?

Accepted Answer

A)  barium oxide
B)  barium(II) oxide
C)  barium monoxide
D)  baric oxide
E)  barium peroxideF) C) and D)
G) C) and E)

Question 9

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

Accepted Answer

A)  bromic acid
B)  bromous acid
C)  hydrobromic acid
D)  hydrobromous acid
E)  hydrobromidic acidF) B) and D)
G) C) and D)

Question 10

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) A) and D)
G) C) and D)

Question 11

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) B) and C)
G) A) and B)

Question 12

Chlorine dioxide is a strong oxidizer that is used for bleaching flour and textiles and for purification of water.What is its formula?

Accepted Answer

A)  (ClO) 2
B)  Cl2O
C)  Cl2O2
D)  Cl2O4
E)  ClO2 F) A) and B)
G) B) and E)

Question 13

In a Millikan oil-drop experiment,the charges on several different oil drops were as follows: -5.92;-4.44;-2.96;-8.88.The units are arbitrary.What is the likely value of the electronic charge in these arbitrary units?

Accepted Answer

A)  -1.11
B)  -1.48
C)  -2.22
D)  -2.96
E)  -5.55F) C) and D)
G) A) and B)

Question 14

Copper (Cu)is a transition metal.

Accepted Answer

A) True 
 B)False

Question 15

The formula C9H20 is an empirical formula.

Accepted Answer

A) True 
 B)False  True

Question 16

What is the formula for magnesium sulfide?

Accepted Answer

A)  MgS
B)  MgS2
C)  Mg2S
D)  Mg2S3
E)  MgSO4 F) B) and E)
G) A) and B)

Question 17

Sodium oxide combines violently with water.Which of the following gives the formula and the bonding for sodium oxide?

Accepted Answer

A)  NaO,ionic compound
B)  NaO,covalent compound
C)  Na2O,ionic compound
D)  Na2O,covalent compound
E)  Na2O2,ionic compoundF) All of the above
G) A) and B) C

Question 18

A row of the periodic table is called a

Accepted Answer

A)  group
B)  period
C)  isotopic mixture
D)  family
E)  subshellF) None of the above
G) B) and E)

Question 19

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

Accepted Answer

Laws of conservation...

Question 20

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide.What is its chemical formula?

Accepted Answer

A)  I2O5
B)  IO5
C)  2IO5
D)  I5O2
E)  (IO5) 2 F) A) and E)
G) B) and D) A

Exam 2: The Components of Matter

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

Correct AnswerverifiedShow Answer

The following charges on individual oil droplets were obtained during an experiment similar to Millikan's.Use them to determine a charge for the electron in coulombs (C),showing all your working. Charges (C): -3.184 ×\times× 10-19;-4.776 ×\times× 10-19;-7.960 ×\times× 10-19

Correct Answerverified-1.59 10<...View AnswerShow Answer

The compound,P4S10,is used in the manufacture of safety matches.What is its name?

Correct AnswerverifiedShow Answer

Ionic compounds may carry a net positive or negative charge.

Correct AnswerverifiedShow Answer

Which of the following is a non-metal?

Correct AnswerverifiedShow Answer

J.J.Thomson studied cathode ray particles (electrons) and was able to measure the mass/charge ratio.His results showed that

Correct AnswerverifiedShow Answer

Calcium hydroxide is used in mortar,plaster and cement.What is its formula?

Correct AnswerverifiedShow Answer

The compound,BaO,absorbs water and carbon dioxide readily and is used to dry gases and organic solvents.What is its name?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Chlorine dioxide is a strong oxidizer that is used for bleaching flour and textiles and for purification of water.What is its formula?

Correct AnswerverifiedShow Answer

In a Millikan oil-drop experiment,the charges on several different oil drops were as follows: -5.92;-4.44;-2.96;-8.88.The units are arbitrary.What is the likely value of the electronic charge in these arbitrary units?

Correct AnswerverifiedShow Answer

Copper (Cu)is a transition metal.

Correct AnswerverifiedShow Answer

The formula C9H20 is an empirical formula.

Correct AnswerverifiedTrue

What is the formula for magnesium sulfide?

Correct AnswerverifiedShow Answer

Sodium oxide combines violently with water.Which of the following gives the formula and the bonding for sodium oxide?

Correct AnswerverifiedC

A row of the periodic table is called a

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedLaws of conservation...View AnswerShow Answer

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide.What is its chemical formula?

Correct AnswerverifiedA

Correct Answer
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The following charges on individual oil droplets were obtained during an experiment similar to Millikan's.Use them to determine a charge for the electron in coulombs (C),showing all your working. Charges (C): -3.184 $\times$ 10^-19;-4.776 $\times$ 10^-19;-7.960 $\times$ 10^-19

Correct Answer
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-1.59 10<...
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The compound,P₄S₁₀,is used in the manufacture of safety matches.What is its name?

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

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The formula C₉H₂₀ is an empirical formula.

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True

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C

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Laws of conservation...
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A