Question 1

Predict the charge of the most stable ion of sodium.

Accepted Answer

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

Question 2

What is the identity of element Q if the ion Q2+ contains 10 electrons?

Accepted Answer

A) C 
B) O 
C) Ne 
D) Mg 
A) C 
B) O 
C) Ne 
D) Mg

Question 3

What is the atomic number for tin?

Accepted Answer

A) 47.87 
B) 50 
C) 118.71 
D) 22 
A) 47.87 
B) 50 
C) 118.71 
D) 22

Question 4

Describe the difference between ions and isotopes.

Accepted Answer

Ions are obtained by the loss

Question 5

Predict the charge that an ion formed from bromine would have.

Accepted Answer

A) 1- 
B) 2+ 
C) 1+ 
D) 4+ 
E) 2- 
A) 1- 
B) 2+ 
C) 1+ 
D) 4+ 
E) 2-

Question 6

In a chemical reaction,matter is neither created nor destroyed.Which law does this refer to?

Accepted Answer

A) Law of definite proportions 
B) Law of the conservation of mass 
C) Law of modern atomic theory 
D) Law of multiple proportions 
E) First law of thermodynamics 
A) Law of definite proportions 
B) Law of the conservation of mass 
C) Law of modern atomic theory 
D) Law of multiple proportions 
E) First law of thermodynamics

Question 7

Iodine 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 8

What species is represented by the following information? 
p+ = 12 n° = 14 e- = 10

Accepted Answer

A) Si4+ 
B) Mg 
C) Ne 
D) Si 
E) Mg2+ 
A) Si4+ 
B) Mg 
C) Ne 
D) Si 
E) Mg2+

Question 9

Identify the chemical symbol of element Q in ${ } _ { 34 } ^ { 80 } \mathrm { Q }$

Accepted Answer

A) Br 
B) Hg 
C) Pd 
D) Se 
A) Br 
B) Hg 
C) Pd 
D) Se

Question 10

If 102.7 g of tin is mixed with 10.9 g of copper to create the alloy pewter,how many moles of metal are present in the pewter?

Accepted Answer

A) 0.9643 mol total 
B) 1.037 mol total 
C) 0.6233 mol total 
D) 1.604 mol total 
E) 0.8675 mol total 
A) 0.9643 mol total 
B) 1.037 mol total 
C) 0.6233 mol total 
D) 1.604 mol total 
E) 0.8675 mol total

Question 11

An atom of 31P contains ________ protons.

Accepted Answer

A) 15 
B) 40 
C) 22 
D) 25 
E) 31 
A) 15 
B) 40 
C) 22 
D) 25 
E) 31

Question 12

How many dozen are in one mole?

Accepted Answer

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

Question 13

When two elements,A and B,form two different compounds,the masses of element B that combine with 1 g of element A can be expressed as a ratio of small whole numbers.Which law does this refer to?

Accepted Answer

A) Law of definite proportions 
B) Law of the conservation of mass 
C) Law of modern atomic theory 
D) Law of multiple proportions 
E) First law of thermodynamics 
A) Law of definite proportions 
B) Law of the conservation of mass 
C) Law of modern atomic theory 
D) Law of multiple proportions 
E) First law of thermodynamics

Question 14

Which of the following elements is a metalloid?

Accepted Answer

A) Al 
B) Ge 
C) C 
D) Sn 
E) Gd 
A) Al 
B) Ge 
C) C 
D) Sn 
E) Gd

Question 15

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 16

Identify the number of electrons in P-3.

Accepted Answer

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

Question 17

Which of the following statements about subatomic particles is TRUE?

Accepted Answer

A) A neutral atom contains the same number of protons and electrons. 
B) Protons have about the same mass as electrons. 
C) Electrons make up most of the mass of an atom. 
D) Protons and neutrons have opposite,but equal in magnitude,charges. 
E) Neutrons and electrons are found in the nucleus of an atom. 
A) A neutral atom contains the same number of protons and electrons. 
B) Protons have about the same mass as electrons. 
C) Electrons make up most of the mass of an atom. 
D) Protons and neutrons have opposite,but equal in magnitude,charges. 
E) Neutrons and electrons are found in the nucleus of an atom.

Question 18

How many electrons are in the ion Cu2+?

Accepted Answer

A) 27 
B) 29 
C) 31 
D) 64 
A) 27 
B) 29 
C) 31 
D) 64

Question 19

Which of the following elements is a metal?

Accepted Answer

A) As 
B) C 
C) I 
D) Sn 
E) Se 
A) As 
B) C 
C) I 
D) Sn 
E) Se

Question 20

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

Accepted Answer

A) 4.0 g Li 
B) 4.0 g Na 
C) 4.0 g Rb 
D) 4.0 g K 
E) 4.0 g Ca 
A) 4.0 g Li 
B) 4.0 g Na 
C) 4.0 g Rb 
D) 4.0 g K 
E) 4.0 g Ca

Exam 2: Atoms and Elements

Predict the charge of the most stable ion of sodium.

What is the identity of element Q if the ion Q2+ contains 10 electrons?

What is the atomic number for tin?

Describe the difference between ions and isotopes.

Predict the charge that an ion formed from bromine would have.

In a chemical reaction,matter is neither created nor destroyed.Which law does this refer to?

Iodine belongs to the ________ group of the periodic table.

What species is represented by the following information? p+ = 12 n° = 14 e- = 10

Identify the chemical symbol of element Q in 3480Q{ } _ { 34 } ^ { 80 } \mathrm { Q }3480​Q

If 102.7 g of tin is mixed with 10.9 g of copper to create the alloy pewter,how many moles of metal are present in the pewter?

An atom of 31P contains ________ protons.

How many dozen are in one mole?

When two elements,A and B,form two different compounds,the masses of element B that combine with 1 g of element A can be expressed as a ratio of small whole numbers.Which law does this refer to?

Which of the following elements is a metalloid?

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

Identify the number of electrons in P-3.

Which of the following statements about subatomic particles is TRUE?

How many electrons are in the ion Cu2+?

Which of the following elements is a metal?

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

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 is the identity of element Q if the ion Q²⁺ contains 10 electrons?

What species is represented by the following information? p⁺ = 12 n° = 14 e^- = 10

Identify the chemical symbol of element Q in ${ } _ { 34 } ^ { 80 } \mathrm { Q }$

An atom of ³¹P contains ________ protons.

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

Identify the number of electrons in P^-3.

How many electrons are in the ion Cu²⁺?