Question 1

An example of a diatomic molecule of an element is

Accepted Answer

A)  He 
B)  N2 
C)  P4 
D)  CO 
A)  He 
B)  N2 
C)  P4 
D)  CO

Question 2

About 74% by mass of Earth's crust is composed of the two elements

Accepted Answer

A)  oxygen and iron. 
B)  aluminum and iron. 
C)  oxygen and silicon. 
D)  silicon and aluminum. 
A)  oxygen and iron. 
B)  aluminum and iron. 
C)  oxygen and silicon. 
D)  silicon and aluminum.

Question 3

Which of the five major divisions of chemistry is generally considered the most fundamental?

Accepted Answer

A)  Organic chemistry 
B)  Inorganic chemistry 
C)  Analytical chemistry 
D)  Physical chemistry 
E)  Biochemistry 
A)  Organic chemistry 
B)  Inorganic chemistry 
C)  Analytical chemistry 
D)  Physical chemistry 
E)  Biochemistry

Question 4

The chemical properties of chlorine and bromine are similar because both

Accepted Answer

A)  are nonmetals and they are close together in the periodic table. 
B)  have seven valence electrons. 
C)  have two electrons in the first shell. 
D)  are in the same period. 
A)  are nonmetals and they are close together in the periodic table. 
B)  have seven valence electrons. 
C)  have two electrons in the first shell. 
D)  are in the same period.

Question 5

Which of the following is a negatively charged polyatomic ion?

Accepted Answer

A)  Ammonium ion 
B)  Oxide ion 
C)  Sodium ion 
D)  Nitrate ion 
A)  Ammonium ion 
B)  Oxide ion 
C)  Sodium ion 
D)  Nitrate ion

Question 6

An element that tends to gain or share electrons during chemical reactions is classified as a(n)______________.

Accepted Answer

The answer of An element that tends to gain or...

Question 7

The symbol for lead is

Accepted Answer

A)  Pb. 
B)  La. 
C)  Li. 
D)  Xe. 
A)  Pb. 
B)  La. 
C)  Li. 
D)  Xe.

Question 8

Which of the following polyatomic ions has a doubly negative charge?

Accepted Answer

A)  Acetate 
B)  Sulfate 
C)  Phosphate 
D)  Ammonium 
A)  Acetate 
B)  Sulfate 
C)  Phosphate 
D)  Ammonium

Question 9

The element barium should produce compounds most similar to those of

Accepted Answer

A)  sodium. 
B)  nitrogen. 
C)  carbon. 
D)  calcium. 
A)  sodium. 
B)  nitrogen. 
C)  carbon. 
D)  calcium.

Question 10

The first shell of an atom can hold a maximum of how many electrons?

Accepted Answer

A)  1 
B)  2 
C)  6 
D)  8 
A)  1 
B)  2 
C)  6 
D)  8

Question 11

Chloroform can be broken down by chemical means but not by physical methods.Thus chloroform is

Accepted Answer

A)  a homogeneous mixture. 
B)  an element. 
C)  a compound. 
D)  a heterogeneous mixture. 
A)  a homogeneous mixture. 
B)  an element. 
C)  a compound. 
D)  a heterogeneous mixture.

Question 12

Which of the following is not matter?

Accepted Answer

A)  Air 
B)  Heat 
C)  Charcoal 
D)  Electrons 
A)  Air 
B)  Heat 
C)  Charcoal 
D)  Electrons

Question 13

The numerals that follow the symbols in chemical formulas are called ______________.

Accepted Answer

The answer of The numerals that follow the symbols in...

Question 14

The symbol for tungsten is

Accepted Answer

A)  W. 
B)  Ti. 
C)  Ag. 
D)  Tb. 
A)  W. 
B)  Ti. 
C)  Ag. 
D)  Tb.

Question 15

Electrons in the outermost shell are referred to as ______________ electrons.

Accepted Answer

A)  valence 
B)  orbital 
C)  f shell 
D)  s shell 
A)  valence 
B)  orbital 
C)  f shell 
D)  s shell

Question 16

Which element is used in safety flares and fireworks because it burns so brightly?

Accepted Answer

A)  Potassium 
B)  Magnesium 
C)  Carbon 
D)  Chlorine 
A)  Potassium 
B)  Magnesium 
C)  Carbon 
D)  Chlorine

Question 17

The preferred name for Cl2O7 is

Accepted Answer

A)  chlorine(II) oxide. 
B)  chlorine oxide. 
C)  dichlorine heptoxide. 
D)  chlorine(VII) oxide. 
A)  chlorine(II) oxide. 
B)  chlorine oxide. 
C)  dichlorine heptoxide. 
D)  chlorine(VII) oxide.

Question 18

In a given period,the element of which group has the highest ionization energy?

Accepted Answer

A)  2A 
B)  8A 
C)  7A 
D)  1A 
A)  2A 
B)  8A 
C)  7A 
D)  1A

Question 19

Which of the following gases is monatomic?

Accepted Answer

A)  Nitrogen 
B)  Argon 
C)  Hydrogen 
D)  Chlorine 
A)  Nitrogen 
B)  Argon 
C)  Hydrogen 
D)  Chlorine

Question 20

Which group is the nearest neighbor to the noble gases in the periodic table?

Accepted Answer

A)  Noble gases 
B)  Alkaline earth metals 
C)  Halogens 
D)  Alkali metals 
A)  Noble gases 
B)  Alkaline earth metals 
C)  Halogens 
D)  Alkali metals

Exam 11: The Chemical Elements

An example of a diatomic molecule of an element is

About 74% by mass of Earth's crust is composed of the two elements

Which of the five major divisions of chemistry is generally considered the most fundamental?

The chemical properties of chlorine and bromine are similar because both

Which of the following is a negatively charged polyatomic ion?

An element that tends to gain or share electrons during chemical reactions is classified as a(n)______________.

The symbol for lead is

Which of the following polyatomic ions has a doubly negative charge?

The element barium should produce compounds most similar to those of

The first shell of an atom can hold a maximum of how many electrons?

Chloroform can be broken down by chemical means but not by physical methods.Thus chloroform is

Which of the following is not matter?

The numerals that follow the symbols in chemical formulas are called ______________.

The symbol for tungsten is

Electrons in the outermost shell are referred to as ______________ electrons.

Which element is used in safety flares and fireworks because it burns so brightly?

The preferred name for Cl2O7 is

In a given period,the element of which group has the highest ionization energy?

Which of the following gases is monatomic?

Which group is the nearest neighbor to the noble gases in the periodic table?

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The preferred name for Cl₂O₇ is