Question 1

What is the correct ionic formula of a compound made from Fe2+ and oxygen?

Accepted Answer

A) Fe2O2 
B) FeO2 
C) Fe2O 
D) FeO 
A) Fe2O2 
B) FeO2 
C) Fe2O 
D) FeO D

Question 2

What is the best way to describe all of the following: Mg, Ca, Be?

Accepted Answer

A) They are compounds. 
B) They are elements. 
C) They are gaseous elements. 
D) They are alkaline earth elements. 
A) They are compounds. 
B) They are elements. 
C) They are gaseous elements. 
D) They are alkaline earth elements. D

Question 3

If HI reacts completely in the reaction KOH + HI → H2O + KI, how much KOH is needed to react with 128 g of HI?

Accepted Answer

A) 112 g 
B) 56.0 g 
C) 128 g 
D) 256 g 
A) 112 g 
B) 56.0 g 
C) 128 g 
D) 256 g B

Question 4

What is the mass of 0.5 mole of S atoms?

Accepted Answer

A) 16 g 
B) 32 g 
C) 8.0 g 
D) 0.5 g 
A) 16 g 
B) 32 g 
C) 8.0 g 
D) 0.5 g

Question 5

How many grams of H2O are formed from the complete reaction of 32 g of O2 according to this equation: 2 H2+ O2 → 2 H2O?

Accepted Answer

Question 6

What type of reaction is 4 Fe + 3 O2 → 2 Fe2O3?

Accepted Answer

A) Oxidation-reduction reaction 
B) Precipitation 
C) Double displacement reaction 
D) Neutralization reaction 
A) Oxidation-reduction reaction 
B) Precipitation 
C) Double displacement reaction 
D) Neutralization reaction

Question 7

The covalent compound sulfur trioxide has what formula?

Accepted Answer

A) SO2 
B) SO3 
C) SO 
D) SO4 
A) SO2 
B) SO3 
C) SO 
D) SO4

Question 8

HCl has what common name?

Accepted Answer

A) Muriatic acid 
B) Table salt 
C) Oil of vitriol 
D) Alcohol 
A) Muriatic acid 
B) Table salt 
C) Oil of vitriol 
D) Alcohol

Question 9

If the reaction LiOH + HCl → LiCl + H2O starts with 30.5 g HCl and 24.0 g LiOH, which is the limiting reactant?

Accepted Answer

Question 10

Why can't a chemical equation be balanced by changing the subscripts of the reactants and/or products?

Accepted Answer

A) Because there will always be more reactants than products when using such a method. 
B) Because changing the subscripts means changing the identity of the chemicals. 
C) It just can't! 
D) None of the above; it can be balanced in this manner. 
A) Because there will always be more reactants than products when using such a method. 
B) Because changing the subscripts means changing the identity of the chemicals. 
C) It just can't! 
D) None of the above; it can be balanced in this manner.

Question 11

How many moles of material are in 74.5 g of KCl?

Accepted Answer

A) 1.0 mole 
B) 2.0 moles 
C) 0.5 moles 
D) 74.5 moles 
A) 1.0 mole 
B) 2.0 moles 
C) 0.5 moles 
D) 74.5 moles

Question 12

What formula does an ionic compound made from aluminum and chlorine have?

Accepted Answer

A) AlCl2 
B) AlCl3 
C) Al2Cl 
D) Al3Cl 
A) AlCl2 
B) AlCl3 
C) Al2Cl 
D) Al3Cl

Question 13

How does this appear when properly balanced: NaClO3 → O2 + NaCl?

Accepted Answer

A) 2 NaClO3 → O2 + 2 NaCl 
B) 2 NaClO3 → 3 O2 + 2 NaCl 
C) 2 NaClO3 → 3 O2 + NaCl 
D) NaClO3 → 3 O2 + 2 NaCl 
A) 2 NaClO3 → O2 + 2 NaCl 
B) 2 NaClO3 → 3 O2 + 2 NaCl 
C) 2 NaClO3 → 3 O2 + NaCl 
D) NaClO3 → 3 O2 + 2 NaCl

Question 14

When O2 reacts with C2H6, according to the equation 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, how much CO2 is produced from 60.0 g of C2H6?

Accepted Answer

A) 60.0 g 
B) 44.0 g 
C) 88.0 g 
D) 176 g 
A) 60.0 g 
B) 44.0 g 
C) 88.0 g 
D) 176 g

Question 15

Silver and gold are examples of what type of element?

Accepted Answer

A) Main group non-metals 
B) Representative metals 
C) Main group metals 
D) Transition metals 
A) Main group non-metals 
B) Representative metals 
C) Main group metals 
D) Transition metals

Question 16

What is the name of the column in the periodic table that includes H, Li, and K?

Accepted Answer

A) The main group metals 
B) The transition metals 
C) The alkaline earth metals 
D) The alkali metals 
A) The main group metals 
B) The transition metals 
C) The alkaline earth metals 
D) The alkali metals

Question 17

What physical sense is not used in helping determine what an unknown substance might be?

Accepted Answer

A) Sight 
B) Touch 
C) Smell 
D) Taste 
A) Sight 
B) Touch 
C) Smell 
D) Taste

Question 18

How is stoichiometry best defined?

Accepted Answer

A) The use of chemical equations for determining the materials in a given chemical calculation 
B) The use of balanced chemical equations for identifying the materials in a given chemical reaction 
C) The use of unbalanced chemical equations for quantifying the amount of materials in a given chemical reaction 
D) The use of balanced chemical equations for quantifying the amount of materials in a given chemical reaction 
A) The use of chemical equations for determining the materials in a given chemical calculation 
B) The use of balanced chemical equations for identifying the materials in a given chemical reaction 
C) The use of unbalanced chemical equations for quantifying the amount of materials in a given chemical reaction 
D) The use of balanced chemical equations for quantifying the amount of materials in a given chemical reaction

Question 19

How many moles of water does 72.0 g of it contain?

Accepted Answer

A) 72.0 moles 
B) 2.0 moles 
C) 4.0 moles 
D) 1.0 moles 
A) 72.0 moles 
B) 2.0 moles 
C) 4.0 moles 
D) 1.0 moles

Question 20

116 g of isopropanol, formula C3H8O, contains how many moles?

Accepted Answer

A) 58.0 moles 
B) 1.0 moles 
C) 1.5 moles 
D) 2.0 moles 
A) 58.0 moles 
B) 1.0 moles 
C) 1.5 moles 
D) 2.0 moles

What is the correct ionic formula of a compound made from Fe²⁺ and oxygen?

What is the best way to describe all of the following: Mg, Ca, Be?

If HI reacts completely in the reaction KOH + HI → H₂O + KI, how much KOH is needed to react with 128 g of HI?

What is the mass of 0.5 mole of S atoms?

How many grams of H₂O are formed from the complete reaction of 32 g of O₂ according to this equation: 2 H₂+ O₂ → 2 H₂O?

What type of reaction is 4 Fe + 3 O₂ → 2 Fe₂O₃?

The covalent compound sulfur trioxide has what formula?

HCl has what common name?

If the reaction LiOH + HCl → LiCl + H₂O starts with 30.5 g HCl and 24.0 g LiOH, which is the limiting reactant?

Why can't a chemical equation be balanced by changing the subscripts of the reactants and/or products?

How many moles of material are in 74.5 g of KCl?

What formula does an ionic compound made from aluminum and chlorine have?

How does this appear when properly balanced: NaClO₃ → O₂ + NaCl?

When O₂ reacts with C₂H₆, according to the equation 2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O, how much CO₂ is produced from 60.0 g of C₂H₆?

Silver and gold are examples of what type of element?

What is the name of the column in the periodic table that includes H, Li, and K?

What physical sense is not used in helping determine what an unknown substance might be?

How is stoichiometry best defined?

How many moles of water does 72.0 g of it contain?

116 g of isopropanol, formula C₃H₈O, contains how many moles?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

Exam 4: Bonding and Reactions

What is the correct ionic formula of a compound made from Fe2+ and oxygen?

What is the best way to describe all of the following: Mg, Ca, Be?

If HI reacts completely in the reaction KOH + HI → H2O + KI, how much KOH is needed to react with 128 g of HI?

What is the mass of 0.5 mole of S atoms?

How many grams of H2O are formed from the complete reaction of 32 g of O2 according to this equation: 2 H2+ O2 → 2 H2O?

What type of reaction is 4 Fe + 3 O2 → 2 Fe2O3?

The covalent compound sulfur trioxide has what formula?

HCl has what common name?

If the reaction LiOH + HCl → LiCl + H2O starts with 30.5 g HCl and 24.0 g LiOH, which is the limiting reactant?

Why can't a chemical equation be balanced by changing the subscripts of the reactants and/or products?

How many moles of material are in 74.5 g of KCl?

What formula does an ionic compound made from aluminum and chlorine have?

How does this appear when properly balanced: NaClO3 → O2 + NaCl?

When O2 reacts with C2H6, according to the equation 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, how much CO2 is produced from 60.0 g of C2H6?

Silver and gold are examples of what type of element?

What is the name of the column in the periodic table that includes H, Li, and K?

What physical sense is not used in helping determine what an unknown substance might be?

How is stoichiometry best defined?

How many moles of water does 72.0 g of it contain?

116 g of isopropanol, formula C3H8O, contains how many moles?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

What is the correct ionic formula of a compound made from Fe²⁺ and oxygen?

If HI reacts completely in the reaction KOH + HI → H₂O + KI, how much KOH is needed to react with 128 g of HI?

How many grams of H₂O are formed from the complete reaction of 32 g of O₂ according to this equation: 2 H₂+ O₂ → 2 H₂O?

What type of reaction is 4 Fe + 3 O₂ → 2 Fe₂O₃?

If the reaction LiOH + HCl → LiCl + H₂O starts with 30.5 g HCl and 24.0 g LiOH, which is the limiting reactant?

How does this appear when properly balanced: NaClO₃ → O₂ + NaCl?

When O₂ reacts with C₂H₆, according to the equation 2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O, how much CO₂ is produced from 60.0 g of C₂H₆?

116 g of isopropanol, formula C₃H₈O, contains how many moles?