Question 1

Identify the number of neutrons in P-3. Phosphorus has one stable isotope, phosphorus-31.

Accepted Answer

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

Question 2

What is the mass, in grams, of one mole of carbon?

Accepted Answer

A)  12.0107 × 1023 g 
B)  1.99 × 10-23 g 
C)  1.000 g 
D)  5.01 × 1022 g 
E)  12.0107 g 
A)  12.0107 × 1023 g 
B)  1.99 × 10-23 g 
C)  1.000 g 
D)  5.01 × 1022 g 
E)  12.0107 g

Question 3

How many protons (p) and neutrons (n) are in an atom of barium-130?

Accepted Answer

A)  56 p, 74 n 
B)  56 p, 130 n 
C)  74 p, 56 n 
D)  130 p, 56 n 
A)  56 p, 74 n 
B)  56 p, 130 n 
C)  74 p, 56 n 
D)  130 p, 56 n

Question 4

How many moles are in one dozen?

Accepted Answer

A)  12 mol 
B)  6.0 × 1023mol 
C)  2.0 × 10-23 mol 
D)  5.0 × 1022 mol 
E)  2.0 × 1023 mol 
A)  12 mol 
B)  6.0 × 1023mol 
C)  2.0 × 10-23 mol 
D)  5.0 × 1022 mol 
E)  2.0 × 1023 mol

Question 5

Determine the number of protons, neutrons, and electrons in the following:   X

Accepted Answer

A)  p+ = 36 n° = 29 e- = 36 
B)  p+ = 29 n° = 29 e- = 36 
C)  p+ = 36 n° = 36 e- = 29 
D)  p+ = 29 n° = 36 e- = 29 
E)  p+ = 29 n° = 36 e- = 36 
A)  p+ = 36 n° = 29 e- = 36 
B)  p+ = 29 n° = 29 e- = 36 
C)  p+ = 36 n° = 36 e- = 29 
D)  p+ = 29 n° = 36 e- = 29 
E)  p+ = 29 n° = 36 e- = 36

Question 6

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 u 32.88%
X-47 46.9443 u 67.12%

Accepted Answer

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

Question 7

Which of the following elements is a nonmetal?

Accepted Answer

A)  Zn 
B)  Cs 
C)  Ca 
D)  Co 
E)  P 
A)  Zn 
B)  Cs 
C)  Ca 
D)  Co 
E)  P

Question 8

Which of the following statements is TRUE?

Accepted Answer

A)  Halogens are very reactive metals. 
B)  The alkali metals are fairly reactive. 
C)  Sulfur is a transition-group element. 
D)  Noble gases readily form ionic compounds. 
E)  Zn is a main-group metal. 
A)  Halogens are very reactive metals. 
B)  The alkali metals are fairly reactive. 
C)  Sulfur is a transition-group element. 
D)  Noble gases readily form ionic compounds. 
E)  Zn is a main-group metal.

Question 9

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

Accepted Answer

Isotopes only differ in the nu

Question 10

How many atoms are in 2.50 moles of CO2?

Accepted Answer

A)  4.52 × 1024 atoms 
B)  1.52 × 1024 atoms 
C)  5.02 × 1023 atoms 
D)  3.01 × 1024 atoms 
E)  7.53 × 1023 atoms 
A)  4.52 × 1024 atoms 
B)  1.52 × 1024 atoms 
C)  5.02 × 1023 atoms 
D)  3.01 × 1024 atoms 
E)  7.53 × 1023 atoms

Question 11

What element is defined by the following information? p+ = 11 n° = 12 e- = 11

Accepted Answer

A)  sodium 
B)  vanadium 
C)  magnesium 
D)  titanium 
A)  sodium 
B)  vanadium 
C)  magnesium 
D)  titanium

Question 12

What is the atomic mass for cadmium?

Accepted Answer

A)  48 
B)  112.41 
C)  40.08 
D)  20 
A)  48 
B)  112.41 
C)  40.08 
D)  20

Question 13

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 14

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

Accepted Answer

A)  carbon 
B)  chlorine 
C)  neon 
D)  aluminum 
A)  carbon 
B)  chlorine 
C)  neon 
D)  aluminum

Identify the number of neutrons in P^-3. Phosphorus has one stable isotope, phosphorus-31.

What is the mass, in grams, of one mole of carbon?

How many protons (p) and neutrons (n) are in an atom of barium-130?

How many moles are in one dozen?

Determine the number of protons, neutrons, and electrons in the following: X

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 u 32.88% X-47 46.9443 u 67.12%

Which of the following elements is a nonmetal?

Which of the following statements is TRUE?

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

How many atoms are in 2.50 moles of CO₂?

What element is defined by the following information? p⁺ = 11 n° = 12 e^- = 11

What is the atomic mass for cadmium?

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

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

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 Metallurgy

Transition Metals and Coordination Compounds

Filters

Exam 2: Atoms and Elements

Identify the number of neutrons in P-3. Phosphorus has one stable isotope, phosphorus-31.

What is the mass, in grams, of one mole of carbon?

How many protons (p) and neutrons (n) are in an atom of barium-130?

How many moles are in one dozen?

Determine the number of protons, neutrons, and electrons in the following: X

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 u 32.88% X-47 46.9443 u 67.12%

Which of the following elements is a nonmetal?

Which of the following statements is TRUE?

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

How many atoms are in 2.50 moles of CO2?

What element is defined by the following information? p+ = 11 n° = 12 e- = 11

What is the atomic mass for cadmium?

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

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

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 Metallurgy

Transition Metals and Coordination Compounds

Filters

Identify the number of neutrons in P^-3. Phosphorus has one stable isotope, phosphorus-31.

How many atoms are in 2.50 moles of CO₂?

What element is defined by the following information? p⁺ = 11 n° = 12 e^- = 11