Question 1

How many electrons are in arsenic?

Accepted Answer

A) 33 
B) 41 
C) 42 
D) 41.9 
E) 75 
A) 33 
B) 41 
C) 42 
D) 41.9 
E) 75

Question 2

Cesium belongs to the ________ group of the periodic table.

Accepted Answer

A) alkali metal 
B) alkaline earth metal 
C) halogen 
D) noble gas 
A) alkali metal 
B) alkaline earth metal 
C) halogen 
D) noble gas

Question 3

What is the average mass,in grams,of one atom of carbon?

Accepted Answer

A) 5.01 × 10-22 g 
B) 5.01 × 1022 g 
C) 1.38 × 10-25 g 
D) 1.99 × 10-23 g 
E) 1.99 × 1023 g 
A) 5.01 × 10-22 g 
B) 5.01 × 1022 g 
C) 1.38 × 10-25 g 
D) 1.99 × 10-23 g 
E) 1.99 × 1023 g

Question 4

Give the name of the instrument that is used to measure masses of atoms and the percent abundance of isotopes.

Accepted Answer

The answer of Give the name of the instrument that...

Question 5

Predict the charge of the most stable ion of chlorine.

Accepted Answer

A) 3+ 
B) 1- 
C) 2- 
D) 2+ 
E) 1+ 
A) 3+ 
B) 1- 
C) 2- 
D) 2+ 
E) 1+

Question 6

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

Accepted Answer

A) 10.0 g Ne 
B) 10.0 g He 
C) 10.0 g Ar 
D) 10.0 g Kr 
E) 10.0 g Mg 
A) 10.0 g Ne 
B) 10.0 g He 
C) 10.0 g Ar 
D) 10.0 g Kr 
E) 10.0 g Mg

Question 7

How many moles of Cs are contained in 595 kg of Cs?

Accepted Answer

A) 2.23 × 102 moles Cs 
B) 4.48 × 103 moles Cs 
C) 7.91 × 104 moles Cs 
D) 1.26 × 103 moles Cs 
E) 5.39 × 102 moles Cs 
A) 2.23 × 102 moles Cs 
B) 4.48 × 103 moles Cs 
C) 7.91 × 104 moles Cs 
D) 1.26 × 103 moles Cs 
E) 5.39 × 102 moles Cs

Question 8

Which of the following elements is a main-group metal?

Accepted Answer

A) Si 
B) Sm 
C) W 
D) Pb 
E) Ge 
A) Si 
B) Sm 
C) W 
D) Pb 
E) Ge

Question 9

What does "X" represent in the following symbol? $${ } _ { 35 } ^ { 80 } \mathrm { X }$$

Accepted Answer

A) mercury 
B) chlorine 
C) scandium 
D) bromine 
E) selenium 
A) mercury 
B) chlorine 
C) scandium 
D) bromine 
E) selenium

Question 10

When forming an ion,sodium,Na,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 11

Which of the following elements is an alkaline earth metal?

Accepted Answer

A) Cs 
B) Cu 
C) Mg 
D) Ti 
E) Br 
A) Cs 
B) Cu 
C) Mg 
D) Ti 
E) Br

Question 12

Identify the symbol for silver.

Accepted Answer

A) S 
B) Si 
C) Ar 
D) Ag 
E) Sl 
A) S 
B) Si 
C) Ar 
D) Ag 
E) Sl

Question 13

How many electrons are in a neutral atom of bromine-81?

Accepted Answer

A) 1 
B) 35 
C) 36 
D) 81 
A) 1 
B) 35 
C) 36 
D) 81

Question 14

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 15

Identify the element that has an atomic number of 40.

Accepted Answer

A) neon 
B) calcium 
C) zirconium 
D) bromine 
A) neon 
B) calcium 
C) zirconium 
D) bromine

Question 16

When forming an ion,iodine,I,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 17

How many atoms are in 1.00 kg of copper?

Accepted Answer

A) 3.83 × 1029 atoms 
B) 3.83 × 1022 atoms 
C) 15.74 atoms 
D) 2.61 × 10-23 atoms 
E) 9.48 × 1024 atoms 
A) 3.83 × 1029 atoms 
B) 3.83 × 1022 atoms 
C) 15.74 atoms 
D) 2.61 × 10-23 atoms 
E) 9.48 × 1024 atoms

Question 18

Determine the number of protons,neutrons,and electrons in the following: $${ } _ { 29 } ^ { 65 } \mathrm { X }$$

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 19

Why doesn't a mass spectrum of silver have a peak at 107.9 u?

Accepted Answer

The average atomic mass of sil

Question 20

Identify the charges of protons,neutrons,and electrons.

Accepted Answer

A) protons +1,neutrons 0,electrons -1 
B) protons 0,neutrons -1,electrons +1 
C) protons -1,neutrons 0,electrons +1 
D) protons 0,neutrons +1,electrons -1 
E) protons +1,neutrons -1,electrons 0 
A) protons +1,neutrons 0,electrons -1 
B) protons 0,neutrons -1,electrons +1 
C) protons -1,neutrons 0,electrons +1 
D) protons 0,neutrons +1,electrons -1 
E) protons +1,neutrons -1,electrons 0

Exam 2: Atoms and Elements

How many electrons are in arsenic?

Cesium belongs to the ________ group of the periodic table.

What is the average mass,in grams,of one atom of carbon?

Give the name of the instrument that is used to measure masses of atoms and the percent abundance of isotopes.

Predict the charge of the most stable ion of chlorine.

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

How many moles of Cs are contained in 595 kg of Cs?

Which of the following elements is a main-group metal?

What does "X" represent in the following symbol? 3580X{ } _ { 35 } ^ { 80 } \mathrm { X }3580​X

When forming an ion,sodium,Na,will ________ electron(s).

Which of the following elements is an alkaline earth metal?

Identify the symbol for silver.

How many electrons are in a neutral atom of bromine-81?

What is the atomic mass for cadmium?

Identify the element that has an atomic number of 40.

When forming an ion,iodine,I,will ________ electron(s).

How many atoms are in 1.00 kg of copper?

Determine the number of protons,neutrons,and electrons in the following: 2965X{ } _ { 29 } ^ { 65 } \mathrm { X }2965​X

Why doesn't a mass spectrum of silver have a peak at 107.9 u?

Identify the charges of protons,neutrons,and electrons.

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

What does "X" represent in the following symbol? ${ } _ { 35 } ^ { 80 } \mathrm { X }$

Determine the number of protons,neutrons,and electrons in the following: ${ } _ { 29 } ^ { 65 } \mathrm { X }$