Question 1

How many electrons are in a neutral atom of chlorine-37?

Accepted Answer

A)  1 
B)  17 
C)  18 
D)  37 
A)  1 
B)  17 
C)  18 
D)  37

Question 2

Which of the following elements is a metalloid?

Accepted Answer

A)  As 
B)  O 
C)  I 
D)  Co 
E)  Xe 
A)  As 
B)  O 
C)  I 
D)  Co 
E)  Xe

Question 3

Which of the following elements is a transition metal?

Accepted Answer

A)  Tc 
B)  P 
C)  F 
D)  Cs 
E)  Ca 
A)  Tc 
B)  P 
C)  F 
D)  Cs 
E)  Ca

Question 4

Which of the following statements is FALSE?

Accepted Answer

A)  Halogens are very reactive elements. 
B)  The alkali metals are fairly unreactive. 
C)  Sulfur is a main group element. 
D)  Noble gases do not usually form ions. 
E)  Zn is a transition metal. 
A)  Halogens are very reactive elements. 
B)  The alkali metals are fairly unreactive. 
C)  Sulfur is a main group element. 
D)  Noble gases do not usually form ions. 
E)  Zn is a transition metal.

Question 5

The atomic number for iron is ________.

Accepted Answer

A)  192.22 
B)  77 
C)  55.85 
D)  26 
A)  192.22 
B)  77 
C)  55.85 
D)  26

Question 6

Give the number of neutrons in 31P3-.

Accepted Answer

A)  18 
B)  12 
C)  19 
D)  15 
E)  16 
A)  18 
B)  12 
C)  19 
D)  15 
E)  16

Question 7

Identify the anion.

Accepted Answer

A)  Te2- 
B)  Ba2+ 
C)  I 
D)  Ne 
E)  F2 
A)  Te2- 
B)  Ba2+ 
C)  I 
D)  Ne 
E)  F2

Question 8

An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has

Accepted Answer

A)  an atomic number of 39 and a mass number of 88. 
B)  an atomic number of 38 and a mass number of 86. 
C)  50 neutrons and 38 protons. 
D)  50 protons and 38 neutrons. 
A)  an atomic number of 39 and a mass number of 88. 
B)  an atomic number of 38 and a mass number of 86. 
C)  50 neutrons and 38 protons. 
D)  50 protons and 38 neutrons.

Question 9

Which of the following contains the fewest atoms? You shouldn't need to do a calculation here.

Accepted Answer

A)  10.0 g Mg 
B)  10.0 g Li 
C)  10.0 g Ar 
D)  10.0 g Rb 
E)  10.0 g Cs 
A)  10.0 g Mg 
B)  10.0 g Li 
C)  10.0 g Ar 
D)  10.0 g Rb 
E)  10.0 g Cs

Question 10

An atom of 13C contains ________ protons.

Accepted Answer

A)  6 
B)  19 
C)  7 
D)  9 
E)  13 
A)  6 
B)  19 
C)  7 
D)  9 
E)  13

Question 11

Identify the largest subatomic particle.

Accepted Answer

A)  a neutron 
B)  an electron 
C)  a proton 
D)  an orbital 
E)  a nucleus 
A)  a neutron 
B)  an electron 
C)  a proton 
D)  an orbital 
E)  a nucleus

Question 12

How many phosphorus atoms are contained in 158 kg of phosphorus?

Accepted Answer

A)  3.07 × 1027 phosphorus atoms 
B)  2.95 × 1027 phosphorus atoms 
C)  3.25 × 1028 phosphorus atoms 
D)  1.18 × 1024 phosphorus atoms 
E)  8.47 × 1024 phosphorus atoms 
A)  3.07 × 1027 phosphorus atoms 
B)  2.95 × 1027 phosphorus atoms 
C)  3.25 × 1028 phosphorus atoms 
D)  1.18 × 1024 phosphorus atoms 
E)  8.47 × 1024 phosphorus atoms

Question 13

An ion has 26 protons,29 neutrons,and 23 electrons.The symbol for the ion is ________.

Accepted Answer

A)  (55Fe3+) 
B)  (55Fe3- ) 
C)  (52Cu3+) 
D)  (52Cu3-) 
E)  (55V3-) 
A)  (55Fe3+) 
B)  (55Fe3- ) 
C)  (52Cu3+) 
D)  (52Cu3-) 
E)  (55V3-)

Question 14

Identify the smallest subatomic particle.

Accepted Answer

A)  a neutron 
B)  an electron 
C)  a proton 
D)  an alpha particle 
E)  a nucleus 
A)  a neutron 
B)  an electron 
C)  a proton 
D)  an alpha particle 
E)  a nucleus

Question 15

The average atomic mass for silver is ________.

Accepted Answer

A)  28.09 
B)  14 
C)  107.87 
D)  47 
A)  28.09 
B)  14 
C)  107.87 
D)  47

Question 16

How many gold atoms are contained in 3.75 moles of gold?

Accepted Answer

A)  1.23 × 1024 gold atoms 
B)  2.26 × 1024 gold atoms 
C)  2.26 × 1023 gold atoms 
D)  9.03 × 1025 gold atoms 
E)  6.50 × 1025 gold atoms 
A)  1.23 × 1024 gold atoms 
B)  2.26 × 1024 gold atoms 
C)  2.26 × 1023 gold atoms 
D)  9.03 × 1025 gold atoms 
E)  6.50 × 1025 gold atoms

Question 17

How many protons (p)and neutrons (n)are in an atom of calcium-46?

Accepted Answer

A)  20 p, 26 n 
B)  20 p, 46 n 
C)  26 p, 20 n 
D)  46 p, 20 n 
A)  20 p, 26 n 
B)  20 p, 46 n 
C)  26 p, 20 n 
D)  46 p, 20 n

Question 18

Give the number of electrons in K+.

Accepted Answer

A)  36 
B)  80 
C)  35 
D)  45 
E)  48 
A)  36 
B)  80 
C)  35 
D)  45 
E)  48

Question 19

Which one of the following elements is a poor conductor of heat and electricity?

Accepted Answer

A)  chromium 
B)  iodine 
C)  copper 
D)  aluminum 
E)  nickel 
A)  chromium 
B)  iodine 
C)  copper 
D)  aluminum 
E)  nickel

Question 20

How many argon atoms are contained in 7.66 ×105 mmol of argon?

Accepted Answer

A)  4.61 × 1026 Ar atoms 
B)  4.61 × 1029 Ar atoms 
C)  3.83 × 1026 Ar atoms 
D)  7.86 × 1021 Ar atoms 
E)  3.24 × 1026 Ar atoms 
A)  4.61 × 1026 Ar atoms 
B)  4.61 × 1029 Ar atoms 
C)  3.83 × 1026 Ar atoms 
D)  7.86 × 1021 Ar atoms 
E)  3.24 × 1026 Ar atoms

Exam 2: Atoms and Elements

How many electrons are in a neutral atom of chlorine-37?

Which of the following elements is a metalloid?

Which of the following elements is a transition metal?

Which of the following statements is FALSE?

The atomic number for iron is ________.

Give the number of neutrons in 31P3-.

Identify the anion.

An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has

Which of the following contains the fewest atoms? You shouldn't need to do a calculation here.

An atom of 13C contains ________ protons.

Identify the largest subatomic particle.

How many phosphorus atoms are contained in 158 kg of phosphorus?

An ion has 26 protons,29 neutrons,and 23 electrons.The symbol for the ion is ________.

Identify the smallest subatomic particle.

The average atomic mass for silver is ________.

How many gold atoms are contained in 3.75 moles of gold?

How many protons (p)and neutrons (n)are in an atom of calcium-46?

Give the number of electrons in K+.

Which one of the following elements is a poor conductor of heat and electricity?

How many argon atoms are contained in 7.66 ×105 mmol of argon?

Matter, measurement, and Problem Solving

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Give the number of neutrons in ³¹P^3-.

An atom of ¹³C contains ________ protons.

An ion has 26 protons,29 neutrons,and 23 electrons.The symbol for the ion is________.

Give the number of electrons in K⁺.

How many argon atoms are contained in 7.66 ×10⁵ mmol of argon?