Question 1

Ionic compounds may carry a net positive or negative charge.

Accepted Answer

A) True 
 B)False

Question 2

Select the incorrect statement about elements and compounds.

Accepted Answer

A)   All ionic compounds are neutral.
B)   Some elements exist as molecules.
C)   The bonding in compounds may be covalent or ionic.
D)   The molecular formula of a compound provides more information than the structural formula.
E)   Among the elements, there are more metals than nonmetals.F) C) and D)
G) A) and D)

Question 3

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 4

Which one of the following statements about atoms and subatomic particles is correct?

Accepted Answer

A)   Rutherford discovered the atomic nucleus by bombarding gold foil with electrons.
B)   The proton and the neutron have identical masses.
C)   The neutron's mass is equal to that of a proton plus an electron.
D)   A neutral atom contains equal numbers of protons and electrons.
E)   An atomic nucleus contains equal numbers of protons and neutrons.F) A) and B)
G) A) and E)

Question 5

Which of the following is a nonmetal?

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 B)
G) B) and C) B

Question 6

What is the name of IF7?

Accepted Answer

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

Question 7

Who is credited with first measuring the charge of the electron?

Accepted Answer

A)   Dalton
B)   Gay-Lussac
C)   Thomson
D)   Millikan
E)   RutherfordF) A) and E)
G) B) and E)

Question 8

What is the name of the acid formed when H2S gas is dissolved in water?

Accepted Answer

A)   sulfuric acid
B)   sulfurous acid
C)   hydrosulfuric acid
D)   hydrosulfurous acid
E)   sulfidic acidF) C) and E)
G) B) and C)

Question 9

Which one of the following combinations of names and formulas of ions is incorrect?

Accepted Answer

A)   O2- oxide
B)   Al3+ aluminum
C)   NO3- nitrate
D)   PO43- phosphate
E)   CrO42- chromateF) C) and E)
G) B) and C)

Question 10

Which of the following has the most metallic character?

Accepted Answer

A)   Ge
B)   In
C)   O
D)   P
E)   SbF) A) and E)
G) A) and C)

Question 11

Which, if any, of the following elements do not occur in the major classes of organic compounds?

Accepted Answer

A)   H
B)   C
C)   N
D)   O
E)   All of these choices are correct.F) All of the above
G) A) and B) E

Question 12

Which one of the following groups does not contain any metals?

Accepted Answer

A)   C, S, As, H
B)   Cu, P, Se, Kr
C)   N, Ne, Nd, Np
D)   Xe, Hg, Ge, O
E)   Cl, Al, Si, ArF) B) and D)
G) None of the above

Question 13

What is the formula for magnesium sulfide?

Accepted Answer

A)   MgS
B)   MgS2
C)   Mg2S
D)   Mg2S3
E)   MgSO4F) A) and B)
G) C) and D)

Question 14

The chemical symbol for potassium is

Accepted Answer

A)   P.
B)   Po.
C)   Pt.
D)   Pm.
E)   K.F) B) and E)
G) A) and C)

Question 15

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 C)
G) B) and E)

Question 16

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)   CaHO2F) A) and B)
G) B) and E)

Question 17

One amu is defined as

Accepted Answer

A)   the mass of a proton.
B)   1/12 the mass of an atom of  .
C)   the mass of an atom of  .
D)   1/20 the mass of an atom of  .
E)   1/16 the mass of an atom of  .F) All of the above
G) B) and C) B

Question 18

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Accepted Answer

A)   KMnO3
B)   KMnO4
C)   K2MnO4
D)   K(MnO4) 2
E)   K2Mn2O7F) A) and E)
G) All of the above

Question 19

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 B)
G) A) and C)

Question 20

An isotope of which of the following elements is chosen as a standard in measuring atomic mass?

Accepted Answer

A)   carbon
B)   oxygen
C)   hydrogen
D)   neon
E)   heliumF) All of the above
G) B) and E)

Exam 2: The Components of Matter

Ionic compounds may carry a net positive or negative charge.

Correct AnswerverifiedShow Answer

Select the incorrect statement about elements and compounds.

Correct AnswerverifiedShow Answer

Millikan's oil-drop experiment

Correct AnswerverifiedShow Answer

Which one of the following statements about atoms and subatomic particles is correct?

Correct AnswerverifiedShow Answer

Which of the following is a nonmetal?

Correct AnswerverifiedB

What is the name of IF7?

Correct AnswerverifiedShow Answer

Who is credited with first measuring the charge of the electron?

Correct AnswerverifiedShow Answer

What is the name of the acid formed when H2S gas is dissolved in water?

Correct AnswerverifiedShow Answer

Which one of the following combinations of names and formulas of ions is incorrect?

Correct AnswerverifiedShow Answer

Which of the following has the most metallic character?

Correct AnswerverifiedShow Answer

Which, if any, of the following elements do not occur in the major classes of organic compounds?

Correct AnswerverifiedE

Which one of the following groups does not contain any metals?

Correct AnswerverifiedShow Answer

What is the formula for magnesium sulfide?

Correct AnswerverifiedShow Answer

The chemical symbol for potassium is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

One amu is defined as

Correct AnswerverifiedB

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An isotope of which of the following elements is chosen as a standard in measuring atomic mass?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

What is the name of IF₇?

Correct Answer
verified

Correct Answer
verified

What is the name of the acid formed when H₂S gas is dissolved in water?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified