Question 1

The symbol of the element with 23 protons is

Accepted Answer

A) Mg. 
B) Na. 
C) V. 
D) B. 
E) none of the above 
A) Mg. 
B) Na. 
C) V. 
D) B. 
E) none of the above

Question 2

Which group contains only noble gases?

Accepted Answer

A) Ni,Pd,Pt 
B) Si,Ge,As 
C) Ce,Pr,Nd 
D) Kr,Xe,Rn 
E) Po,Fr,Ac 
A) Ni,Pd,Pt 
B) Si,Ge,As 
C) Ce,Pr,Nd 
D) Kr,Xe,Rn 
E) Po,Fr,Ac

Question 3

The element with the electron configuration 1s2 2s2 2p6 3s2 3p5 is

Accepted Answer

A) fluorine. 
B) chlorine. 
C) carbon. 
D) potassium. 
E) sulfur. 
A) fluorine. 
B) chlorine. 
C) carbon. 
D) potassium. 
E) sulfur.

Question 4

Atoms of  
Cl contain ________ protons and ________ neutrons.

Accepted Answer

A) 17; 17 
B) 17; 18 
C) 18; 17 
D) 35; 18 
E) 35; 17 
A) 17; 17 
B) 17; 18 
C) 18; 17 
D) 35; 18 
E) 35; 17

Question 5

How many neutrons does an atom of  
Ti have?

Accepted Answer

A) 0 
B) 22 
C) 24 
D) 46 
E) 68 
A) 0 
B) 22 
C) 24 
D) 46 
E) 68

Question 6

Which element is not a semimetal?

Accepted Answer

A) Al 
B) Si 
C) Ge 
D) As 
E) none of the above 
A) Al 
B) Si 
C) Ge 
D) As 
E) none of the above

Question 7

For the isotope 71Ga,Z = ________ and A = ________.

Accepted Answer

A) 31; 40 
B) 71; 31 
C) 71; 40 
D) 31; 71 
E) 31; 69.723 
A) 31; 40 
B) 71; 31 
C) 71; 40 
D) 31; 71 
E) 31; 69.723

Question 8

Where is most of the mass of an atom concentrated?

Accepted Answer

A) electrons 
B) neutrons 
C) nucleus 
D) orbitals 
E) protons 
A) electrons 
B) neutrons 
C) nucleus 
D) orbitals 
E) protons

Question 9

Which of the following subshells consists of five orbitals?

Accepted Answer

A) 4s 
B) 4p 
C) 4d 
D) 4f 
E) none of the above 
A) 4s 
B) 4p 
C) 4d 
D) 4f 
E) none of the above

Question 10

Protons possess a ________ charge,and electrons possess a ________ charge.

Accepted Answer

A) negative,negative 
B) negative,positive 
C) positive,negative 
D) positive,zero 
E) zero,positive 
A) negative,negative 
B) negative,positive 
C) positive,negative 
D) positive,zero 
E) zero,positive

Question 11

An atom with Z = 31 and A = 69 contains ________ protons and ________ neutrons.

Accepted Answer

A) 31; 69 
B) 69; 31 
C) 31; 38 
D) 38; 31 
E) 31; 100 
A) 31; 69 
B) 69; 31 
C) 31; 38 
D) 38; 31 
E) 31; 100

The symbol of the element with 23 protons is

Which group contains only noble gases?

The element with the electron configuration 1s²2s²2p⁶3s²3p⁵ is

Atoms of Cl contain protons and neutrons.

How many neutrons does an atom of Ti have?

Which element is not a semimetal?

For the isotope ⁷¹Ga,Z = and A = .

Where is most of the mass of an atom concentrated?

Which of the following subshells consists of five orbitals?

Protons possess a charge,and electrons possess a charge.

An atom with Z = 31 and A = 69 contains protons and neutrons.

Matter and Measurements

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Protein and Amino Acid Metabolism

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

Exam 2: Atoms and the Periodic Table

The symbol of the element with 23 protons is

Which group contains only noble gases?

The element with the electron configuration 1s2 2s2 2p6 3s2 3p5 is

Atoms of Cl contain ________ protons and ________ neutrons.

How many neutrons does an atom of Ti have?

Which element is not a semimetal?

For the isotope 71Ga,Z = ________ and A = ________.

Where is most of the mass of an atom concentrated?

Which of the following subshells consists of five orbitals?

Protons possess a ________ charge,and electrons possess a ________ charge.

An atom with Z = 31 and A = 69 contains ________ protons and ________ neutrons.

Matter and Measurements

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Protein and Amino Acid Metabolism

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

The element with the electron configuration 1s²2s²2p⁶3s²3p⁵ is

Atoms of Cl contain protons and neutrons.

For the isotope ⁷¹Ga,Z = and A = .

Protons possess a charge,and electrons possess a charge.

An atom with Z = 31 and A = 69 contains protons and neutrons.