Question 1

Which of the following is a molecular formula for a compound with an empirical formula of CH?

Accepted Answer

A) C2H6 
B) C3H9 
C) C4H10 
D) C6H6 
E) None of the answers is correct. 
A) C2H6 
B) C3H9 
C) C4H10 
D) C6H6 
E) None of the answers is correct.

Question 2

Which of the following elements exists as a diatomic molecule in the elemental state?

Accepted Answer

A) Li 
B) Ne 
C) Cl 
D) Cu 
A) Li 
B) Ne 
C) Cl 
D) Cu

Question 3

Determine the charge on the unknown ion, A, in the compound A2S.

Accepted Answer

A) +2 
B) +1 
C) -1 
D) -2 
A) +2 
B) +1 
C) -1 
D) -2

Question 4

If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

Accepted Answer

A) Solute 
B) Compound 
C) Homogeneous mixture 
D) Heterogeneous mixture 
E) Solvent 
A) Solute 
B) Compound 
C) Homogeneous mixture 
D) Heterogeneous mixture 
E) Solvent

Question 5

What is the name of ClO − ion?

Accepted Answer

A) hypochlorite 
B) chlorate 
C) chlorite 
D) perchlorate 
E) perchlorite 
A) hypochlorite 
B) chlorate 
C) chlorite 
D) perchlorate 
E) perchlorite

Question 6

What is the chemical name of FeSO3.

Accepted Answer

A) Iron(II) sulfite 
B) Iron(III) sulfate 
C) Iron sulfate 
D) Iron sulfur trioxide 
E) None of the above names is correct. 
A) Iron(II) sulfite 
B) Iron(III) sulfate 
C) Iron sulfate 
D) Iron sulfur trioxide 
E) None of the above names is correct.

Question 7

Which of these compounds is most likely to be ionic?

Accepted Answer

A) NCl3 
B) BaCl2 
C) CO 
D) SO2 
E) SF4 
A) NCl3 
B) BaCl2 
C) CO 
D) SO2 
E) SF4

Question 8

Which of these compounds is most likely to be covalent?

Accepted Answer

A) Rb2S 
B) SrCl2 
C) CS2 
D) CaO 
E) MgI2 
A) Rb2S 
B) SrCl2 
C) CS2 
D) CaO 
E) MgI2

Question 9

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

Question 10

Which of these pairs of elements would be most likely to form an ionic compound?

Accepted Answer

A) Cl and I 
B) Al and K 
C) Cl and Mg 
D) C and S 
E) Al and Mg 
A) Cl and I 
B) Al and K 
C) Cl and Mg 
D) C and S 
E) Al and Mg

Question 11

Which of the following is a covalent compound?

Accepted Answer

A) Na2O 
B) CaCl2 
C) Cl2O 
D) CsCl 
E) Al2O3 
A) Na2O 
B) CaCl2 
C) Cl2O 
D) CsCl 
E) Al2O3

Question 12

Which of these compounds is most likely to be covalent?

Accepted Answer

A) KF 
B) CaCl2 
C) SF4 
D) Al2O3 
E) CaSO4 
A) KF 
B) CaCl2 
C) SF4 
D) Al2O3 
E) CaSO4

Question 13

Determine the charge on the unknown ion, A, in the compound ACl2.

Accepted Answer

A) +2 
B) +1 
C) -1 
D) -2 
A) +2 
B) +1 
C) -1 
D) -2

Question 14

Determine the charge on the unknown ion, A, in the compound AO.

Accepted Answer

A) +2 
B) +1 
C) -1 
D) -2 
A) +2 
B) +1 
C) -1 
D) -2

Question 15

What is the formula for lead(II) oxide?

Accepted Answer

A) PbO 
B) PbO2 
C) Pb2O 
D) PbO4 
E) Pb2O3 
A) PbO 
B) PbO2 
C) Pb2O 
D) PbO4 
E) Pb2O3

Question 16

What types of elements undergo ionic bonding?

Accepted Answer

A) two metals 
B) a nonmetal and a metal 
C) two nonmetals 
D) two Group 1A elements 
E) two noble gases 
A) two metals 
B) a nonmetal and a metal 
C) two nonmetals 
D) two Group 1A elements 
E) two noble gases

Question 17

Which of the following is the empirical formula for hexane, C6H14?

Accepted Answer

A) C12H28 
B) C6H14 
C) C3H7 
D) CH2.3 
E) C0.43H 
A) C12H28 
B) C6H14 
C) C3H7 
D) CH2.3 
E) C0.43H

Question 18

A scoop of vanilla ice cream is a pure substance.

Accepted Answer

A) True 
 B)False

Question 19

The rusting of a piece of iron under environmental conditions is a physical change.

Accepted Answer

A) True 
 B)False

Question 20

The formula for sodium sulfide is

Accepted Answer

A) NaS 
B) K2S 
C) NaS2 
D) Na2S 
E) SeS 
A) NaS 
B) K2S 
C) NaS2 
D) Na2S 
E) SeS

Which of the following is a molecular formula for a compound with an empirical formula of CH?

Which of the following elements exists as a diatomic molecule in the elemental state?

Determine the charge on the unknown ion, A, in the compound A₂S.

If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

What is the name of ClO ⁻ ion?

What is the chemical name of FeSO₃.

Which of these compounds is most likely to be ionic?

Which of these compounds is most likely to be covalent?

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

Which of these pairs of elements would be most likely to form an ionic compound?

Which of the following is a covalent compound?

Which of these compounds is most likely to be covalent?

Determine the charge on the unknown ion, A, in the compound ACl2.

Determine the charge on the unknown ion, A, in the compound AO.

What is the formula for lead(II) oxide?

What types of elements undergo ionic bonding?

Which of the following is the empirical formula for hexane, C₆H₁₄?

A scoop of vanilla ice cream is a pure substance.

The rusting of a piece of iron under environmental conditions is a physical change.

The formula for sodium sulfide is

Atoms and Elements

Electrons and the Periodic Table

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

Exam 3: Compounds and Chemical Bonds

Which of the following is a molecular formula for a compound with an empirical formula of CH?

Which of the following elements exists as a diatomic molecule in the elemental state?

Determine the charge on the unknown ion, A, in the compound A2S.

If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

What is the name of ClO − ion?

What is the chemical name of FeSO3.

Which of these compounds is most likely to be ionic?

Which of these compounds is most likely to be covalent?

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

Which of these pairs of elements would be most likely to form an ionic compound?

Which of the following is a covalent compound?

Which of these compounds is most likely to be covalent?

Determine the charge on the unknown ion, A, in the compound ACl2.

Determine the charge on the unknown ion, A, in the compound AO.

What is the formula for lead(II) oxide?

What types of elements undergo ionic bonding?

Which of the following is the empirical formula for hexane, C6H14?

A scoop of vanilla ice cream is a pure substance.

The rusting of a piece of iron under environmental conditions is a physical change.

The formula for sodium sulfide is

Atoms and Elements

Electrons and the Periodic Table

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

Determine the charge on the unknown ion, A, in the compound A₂S.

What is the name of ClO ⁻ ion?

What is the chemical name of FeSO₃.

Which of the following is the empirical formula for hexane, C₆H₁₄?