Question 1

The colorless substance, MgF2, is used in the ceramics and glass industry. What is its name?

Accepted Answer

A)   magnesium difluoride
B)   magnesium fluoride
C)   magnesium(II)  fluoride
D)   monomagnesium difluoride
E)   none of the above, since they are all misspelledF) B) and C)
G) A) and E)

Question 2

What is the name of IF7?

Accepted Answer

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

Question 3

What is the name of BBr3?

Accepted Answer

A)   boron bromide
B)   boric bromide
C)   boron tribromide
D)   tribromoboride
E)   bromine triborideF) B) and C)
G) A) and B)

Question 4

The name for HF(g)  is

Accepted Answer

A)   hydrofluoric acid.
B)   hydrogen(I)  fluoride.
C)   hydrogen fluoride.
D)   hydrogen fluorine.
E)   fluoric acid.F) A) and B)
G) A) and C)

Question 5

Barium sulfate is used in manufacturing photographic paper. What is its formula?

Accepted Answer

A)   BaSO4
B)   Ba(SO4) 2
C)   Ba2SO4
D)   Ba2(SO4) 3
E)   BaSO3F) A) and D)
G) C) and E)

Question 6

What is the chemical symbol for the group 6A (16)  element that lies in period 4?

Accepted Answer

A)   Cr
B)   Hf
C)   W
D)   Ti
E)   SeF) B) and D)
G) C) and D)

Question 7

In the ionic compound with the general formula M2X3, the likely charge on X is

Accepted Answer

A)   +1.
B)   +3.
C)   -1.
D)   -2.
E)   -3.F) A) and B)
G) A) and C)

Question 8

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

Accepted Answer

A)   C12H28
B)   C6H14
C)   C3H7
D)   CH2.3
E)   C0.43HF) All of the above
G) B) and E)

Question 9

The chemical symbol for potassium is

Accepted Answer

A)   P.
B)   Po.
C)   Pt.
D)   Pm.
E)   K.F) All of the above
G) B) and D)

Question 10

Rutherford bombarded gold foil with alpha ()  particles and found that a small percentage of the particles were deflected. Which of the following was not accounted for by the model he proposed for the structure of atoms?

Accepted Answer

A)   the small size of the nucleus
B)   the charge on the nucleus
C)   the total mass of the atom
D)   the existence of protons
E)   the presence of electrons outside the nucleusF) B) and D)
G) C) and D)

Question 11

Sodium peroxide is an oxidizer used to bleach animal and vegetable fibers. What is its formula?

Accepted Answer

A)   NaO
B)   NaO2
C)   Na2O2
D)   Na2O
E)   NaH2O2F) B) and D)
G) None of the above

Question 12

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) C) and D)
G) B) and C)

Question 13

Calculate the molecular masses of the following:
a. Cl2
b. H2O2
c. (NH4)2SO4
d. Ba(NO3)2

Accepted Answer

a. 70.90 amu
b. 34.0...

Question 14

What is the name of PCl3?

Accepted Answer

A)   phosphorus chloride
B)   phosphoric chloride
C)   phosphorus trichlorate
D)   trichlorophosphide
E)   phosphorus trichlorideF) A) and B)
G) A) and C)

Question 15

What is the name of Na2O?

Accepted Answer

A)   disodium monoxide
B)   sodium monoxide
C)   sodium dioxide
D)   sodium(I)  oxide
E)   sodium oxideF) None of the above
G) A) and E)

Question 16

Barium fluoride is used in embalming and in glass manufacturing. Which of the following gives the formula and bonding for barium fluoride?

Accepted Answer

A)   BaF2, ionic compound
B)   BaF2, covalent compound
C)   BaF, ionic compound
D)   BaF, covalent compound
E)   Ba2F, ionic compoundF) A) and C)
G) C) and E)

Question 17

Atoms X, Y, Z, and R have the following nuclear compositions:  Which two are isotopes?

Accepted Answer

A)   X & Y
B)   X & R
C)   Y & R
D)   Z & R
E)   X & ZF) B) and D)
G) A) and B)

Question 18

When an atom is represented by the symbol  , the value of A is the

Accepted Answer

A)   number of neutrons in the atom.
B)   number of protons in the atom.
C)   atomic mass of the element.
D)   total number of electrons and neutrons in the atom.
E)   total number of protons and neutrons in the atom.F) A) and E)
G) D) and E)

Question 19

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

Question 20

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) C) and D)
G) All of the above

Exam 2: The Components of Matter

Atoms X, Y, Z, and R have the following nuclear compositions: Which two are isotopes?

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

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

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Calculate the molecular masses of the following: a. Cl2 b. H2O2 c. (NH4)2SO4 d. Ba(NO3)2

Correct Answerverifieda. 70.90 amub. 34.0...View AnswerShow Answer

Barium fluoride is used in embalming and in glass manufacturing. Which of the following gives the formula and bonding for barium fluoride?

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Barium sulfate is used in manufacturing photographic paper. What is its formula?

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Rutherford bombarded gold foil with alpha () particles and found that a small percentage of the particles were deflected. Which of the following was not accounted for by the model he proposed for the structure of atoms?

Correct AnswerverifiedShow Answer

The name for HF(g) is

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

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What is the name of BBr3?

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What is the chemical symbol for the group 6A (16) element that lies in period 4?

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The chemical symbol for potassium is

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What is the name of IF7?

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What is the name of PCl3?

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Millikan's oil-drop experiment

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What is the name of Na2O?

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In the ionic compound with the general formula M2X3, the likely charge on X is

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When an atom is represented by the symbol , the value of A is the

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The colorless substance, MgF2, is used in the ceramics and glass industry. What is its name?

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Sodium peroxide is an oxidizer used to bleach animal and vegetable fibers. What is its formula?

Correct AnswerverifiedShow Answer

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Calculate the molecular masses of the following: a. Cl₂ b. H₂O₂ c. (NH₄)₂SO₄ d. Ba(NO₃)₂

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a. 70.90 amu
b. 34.0...
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Which of the following is the empirical formula for hexane, C₆H₁₄?

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What is the name of BBr₃?

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What is the name of IF₇?

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What is the name of PCl₃?

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What is the name of Na₂O?

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In the ionic compound with the general formula M₂X₃, the likely charge on X is

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The colorless substance, MgF₂, is used in the ceramics and glass industry. What is its name?

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