Question 1

The formula C9H20 is an empirical formula.

Accepted Answer

A) True 
 B)False  True

Question 2

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  
A) I2O5 
B) IO5 
C) 2IO5 
D) I5O2 
E) (IO5)2  A

Question 3

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 compound 
A) NaO,ionic compound 
B) NaO,covalent compound 
C) Na2O,ionic compound 
D) Na2O,covalent compound 
E) Na2O2,ionic compound C

Question 4

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

Question 5

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

Accepted Answer

Laws of conservation

Question 6

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 @#LAT-DLM& 10<

Question 7

Copper (Cu)is a transition metal.

Accepted Answer

A) True 
 B)False

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 peroxide 
A) barium oxide 
B) barium(II)oxide 
C) barium monoxide 
D) baric oxide 
E) barium peroxide

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

Question 10

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

Question 11

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. 
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.

Question 12

A row of the periodic table is called a

Accepted Answer

A) group 
B) period 
C) isotopic mixture 
D) family 
E) subshell 
A) group 
B) period 
C) isotopic mixture 
D) family 
E) subshell

Question 13

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 decasulfide 
A) phosphorus sulfide 
B) phosphoric sulfide 
C) phosphorus decasulfide 
D) tetraphosphorus decasulfide

Question 14

What is the formula for magnesium sulfide?

Accepted Answer

A) MgS 
B) MgS2 
C) Mg2S 
D) Mg2S3 
E) MgSO4  
A) MgS 
B) MgS2 
C) Mg2S 
D) Mg2S3 
E) MgSO4

Question 15

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

Question 16

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

Question 17

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

Question 18

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  
A) FeO 
B) Fe2O 
C) FeO3 
D) Fe2O5 
E) Fe2O3

Question 19

Ionic compounds may carry a net positive or negative charge.

Accepted Answer

A) True 
 B)False

Question 20

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 cyanide 
A) cyanic acid 
B) hydrocyanic acid 
C) cyanous acid 
D) hydrocyanous acid 
E) hydrogen cyanide

Exam 2: The Components of Matter

The formula C9H20 is an empirical formula.

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

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

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

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

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

Copper (Cu)is a transition metal.

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

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

Which of the following is a non-metal?

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

A row of the periodic table is called a

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

What is the formula for magnesium sulfide?

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

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

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?

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

Ionic compounds may carry a net positive or negative charge.

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

Keys to the Study of Chemistry

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids,solids,and Phase Changes

The Properties of Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

The formula C₉H₂₀ is an empirical formula.

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

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

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