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

Question 2

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) D) and E)

Question 3

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) All of the above
G) A) and B)

Question 4

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

Question 5

What is the name of PCl3?

Accepted Answer

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

Question 6

What is the name of IF7?

Accepted Answer

A)   iodine fluoride
B)   iodic fluoride
C)   iodine heptafluoride
D)   heptafluoroiodide
E)   heptafluorine iodideF) B) and E)
G) None of the above

Question 7

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) B) and E)
G) A) and D)

Question 8

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) None of the above
G) All of the above

Question 9

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 E)
G) A) and E)

Question 10

What is the name of Na2O?

Accepted Answer

A)   disodium monoxide
B)   sodium monoxide
C)   sodium dioxide
D)   sodium(I)  oxide
E)   sodium oxideF) A) and B)
G) C) and D)

Question 11

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 B)
G) B) and E)

Question 12

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) C) and D)
G) A) and D)

Question 13

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) A) and C)

Question 14

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

Question 15

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 16

What is the name of BBr3?

Accepted Answer

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

Question 17

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 C)
G) D) and E)

Question 18

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) B) and E)
G) B) and C)

Question 19

The chemical symbol for potassium is

Accepted Answer

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

Question 20

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 E)
G) A) and D)

Exam 2: The Components of Matter

What is the name of IF7?

Correct AnswerverifiedShow Answer

What is the name of BBr3?

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the name of PCl3?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the name of Na2O?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The chemical symbol for potassium is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Millikan's oil-drop experiment

Correct AnswerverifiedShow Answer

The name for HF(g) is

Correct AnswerverifiedShow Answer

What is the name of IF₇?

Correct Answer
verified

What is the name of BBr₃?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the name of PCl₃?

Correct Answer
verified

Correct Answer
verified

What is the name of Na₂O?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified
a. 70.90 amu
b. 34.0...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified