Question 1

What element is defined by the following information?
 p+ = 17 n° = 20 e- = 17

Accepted Answer

A) calcium 
B) rubidium 
C) chlorine 
D) neon 
E) oxygen 
A) calcium 
B) rubidium 
C) chlorine 
D) neon 
E) oxygen

Question 2

What is the chemical symbol for copper?

Accepted Answer

A) Co 
B) Cr 
C) Cu 
D) C 
A) Co 
B) Cr 
C) Cu 
D) C

Question 3

Which of the following describes a metal?

Accepted Answer

A) Poor conductor of heat 
B) Good conductor of electricity 
C) Tends to gain electrons 
D) Forms ionic compounds with group 18 elements 
E) Found on the upper right corner of the periodic table 
A) Poor conductor of heat 
B) Good conductor of electricity 
C) Tends to gain electrons 
D) Forms ionic compounds with group 18 elements 
E) Found on the upper right corner of the periodic table

Question 4

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

Accepted Answer

A) 6.23 × 1024 silver atoms 
B) 2.26 × 1024 silver atoms 
C) 1.61 × 1023 silver atoms 
D) 2.44 × 1026 silver atoms 
E) 6.50 × 1025 silver atoms 
A) 6.23 × 1024 silver atoms 
B) 2.26 × 1024 silver atoms 
C) 1.61 × 1023 silver atoms 
D) 2.44 × 1026 silver atoms 
E) 6.50 × 1025 silver atoms

Question 5

An ion has 8 protons, 9 neutrons, and 10 electrons. The symbol for the ion is ________.

Accepted Answer

A) 17O2-  
B) 17O2+  
C) 19F+  
D) 19F-  
E) 17Ne2+  
A) 17O2-  
B) 17O2+  
C) 19F+  
D) 19F-  
E) 17Ne2+

Question 6

What species is represented by the following information?
 p+ = 17 n° = 18 e- = 18

Accepted Answer

A) Cl 
B) Cl- 
C) Ar 
D) Ar+ 
E) Kr 
A) Cl 
B) Cl- 
C) Ar 
D) Ar+ 
E) Kr

Question 7

Calculate the atomic mass of chromium if chromium has four naturally occurring isotopes with the following masses and natural abundances: 
Cr-50 49.9461 amu 4.35%
Cr-52 51.9405 amu 83.79%
Cr-53 52.9407 amu 9.50%
Cr-54 53.9389 amu 2.36%

Accepted Answer

A) 51.941 amu 
B) 51.699 amu 
C) 208.766 amu 
D) 53.214 amu 
E) 51.996 amu 
A) 51.941 amu 
B) 51.699 amu 
C) 208.766 amu 
D) 53.214 amu 
E) 51.996 amu

Question 8

What species is represented by the following information? 
p+ = 47 n° = 62 e- = 46

Accepted Answer

A) Ag+ 
B) Nd 
C) Pd 
D) Ag 
E) Pd+ 
A) Ag+ 
B) Nd 
C) Pd 
D) Ag 
E) Pd+

Question 9

What mass (in mg)does 2.63 moles of nickel have?

Accepted Answer

A) 44.8 mg 
B) 2.23 × 104 mg 
C) 129 mg 
D) 3.56 × 105 mg 
E) 1.54 × 105 mg 
A) 44.8 mg 
B) 2.23 × 104 mg 
C) 129 mg 
D) 3.56 × 105 mg 
E) 1.54 × 105 mg

Question 10

Which of the following elements is classified as a semimetal?

Accepted Answer

A) calcium 
B) boron 
C) fluorine 
D) uranium 
A) calcium 
B) boron 
C) fluorine 
D) uranium

Question 11

When forming an ion, fluorine, F, will ________ electron(s).

Accepted Answer

A) gain one 
B) gain two 
C) gain three 
D) lose one 
E) lose two 
A) gain one 
B) gain two 
C) gain three 
D) lose one 
E) lose two

Question 12

Give an example of a halogen.

Accepted Answer

The answer of Give an example of a halogen....

Question 13

What does "X" represent in the following symbol?

Accepted Answer

A) tin 
B) copper 
C) palladium 
D) niobium 
E) uranium 
A) tin 
B) copper 
C) palladium 
D) niobium 
E) uranium

Question 14

Why do the isotopes of the same element have the same atomic size?

Accepted Answer

Isotopes only differ in the nu

Question 15

Calculate the atomic mass of element "X" if it has two naturally occurring isotopes with the following masses and natural abundances: 
X-45 44.8776 amu 32.88%
X-47 46.9443 amu 67.12%

Accepted Answer

A) 46.26 amu 
B) 45.91 amu 
C) 46.34 amu 
D) 46.84 amu 
E) 44.99 amu 
A) 46.26 amu 
B) 45.91 amu 
C) 46.34 amu 
D) 46.84 amu 
E) 44.99 amu

Question 16

Which of the following elements is a noble gas?

Accepted Answer

A) Ar 
B) Br 
C) N 
D) O 
E) K 
A) Ar 
B) Br 
C) N 
D) O 
E) K

Question 17

In which of the following sets do all species have the same number of electrons?

Accepted Answer

A) F-, Ne, Mg2+ 
B) Ge, Se2-, Br- 
C) K+, Rb+, Cs+ 
D) Br, Br-, Br+ 
A) F-, Ne, Mg2+ 
B) Ge, Se2-, Br- 
C) K+, Rb+, Cs+ 
D) Br, Br-, Br+

Question 18

How many electrons does the Al3+ ion possess?

Accepted Answer

A) 16 
B) 10 
C) 6 
D) 0 
E) 13 
A) 16 
B) 10 
C) 6 
D) 0 
E) 13

Question 19

When forming the nitride ion, nitrogen, N, will ________ electron(s).

Accepted Answer

A) gain one 
B) gain two 
C) gain three 
D) lose one 
E) lose two 
A) gain one 
B) gain two 
C) gain three 
D) lose one 
E) lose two

Question 20

How many moles of Kr are contained in 398 mg of Kr?

Accepted Answer

A) 4.75 × 10-3 moles Kr 
B) 33.4 moles Kr 
C) 2.11 × 10-4 moles Kr 
D) 2.99 × 10-3 moles Kr 
E) 1.19 × 10-4 moles Kr 
A) 4.75 × 10-3 moles Kr 
B) 33.4 moles Kr 
C) 2.11 × 10-4 moles Kr 
D) 2.99 × 10-3 moles Kr 
E) 1.19 × 10-4 moles Kr

Exam 2: Atoms and Elements

What element is defined by the following information? p+ = 17 n° = 20 e- = 17

What is the chemical symbol for copper?

Which of the following describes a metal?

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

An ion has 8 protons, 9 neutrons, and 10 electrons. The symbol for the ion is ________.

What species is represented by the following information? p+ = 17 n° = 18 e- = 18

Calculate the atomic mass of chromium if chromium has four naturally occurring isotopes with the following masses and natural abundances: Cr-50 49.9461 amu 4.35% Cr-52 51.9405 amu 83.79% Cr-53 52.9407 amu 9.50% Cr-54 53.9389 amu 2.36%

What species is represented by the following information? p+ = 47 n° = 62 e- = 46

What mass (in mg)does 2.63 moles of nickel have?

Which of the following elements is classified as a semimetal?

When forming an ion, fluorine, F, will ________ electron(s).

Give an example of a halogen.

What does "X" represent in the following symbol?

Why do the isotopes of the same element have the same atomic size?

Calculate the atomic mass of element "X" if it has two naturally occurring isotopes with the following masses and natural abundances: X-45 44.8776 amu 32.88% X-47 46.9443 amu 67.12%

Which of the following elements is a noble gas?

In which of the following sets do all species have the same number of electrons?

How many electrons does the Al3+ ion possess?

When forming the nitride ion, nitrogen, N, will ________ electron(s).

How many moles of Kr are contained in 398 mg of Kr?

Units of Measurement for Physical and Chemical Change

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

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, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

What element is defined by the following information? p⁺ = 17 n° = 20 e^- = 17

What species is represented by the following information? p⁺ = 17 n° = 18 e^- = 18

What species is represented by the following information? p⁺ = 47 n° = 62 e^- = 46

How many electrons does the Al³⁺ ion possess?