Question 1

Which of the following statements correctly describes ionization energies?

Accepted Answer

A)  Ionization energies are always positive as the process of electron removal is always endothermic. 
B)  Ionization energies generally increase as we go from top to bottom within a column of the periodic table. 
C)  Ionization energies are always positive as the process of electron removal is always endothermic and ionization energies generally increase as we go from top to bottom within a column of the periodic table. 
D)  Ionization energies are neither positive nor do they generally increase. 
A)  Ionization energies are always positive as the process of electron removal is always endothermic. 
B)  Ionization energies generally increase as we go from top to bottom within a column of the periodic table. 
C)  Ionization energies are always positive as the process of electron removal is always endothermic and ionization energies generally increase as we go from top to bottom within a column of the periodic table. 
D)  Ionization energies are neither positive nor do they generally increase.

Question 2

What are the elements in the "B" columns of the periodic table called?

Accepted Answer

A)  main group elements 
B)  inner transition elements 
C)  transition elements 
D)  none of these 
A)  main group elements 
B)  inner transition elements 
C)  transition elements 
D)  none of these

Question 3

What is the approximate mass of a proton?

Accepted Answer

A)  12 g 
B)  1 g 
C)  12 amu 
D)  1 amu 
A)  12 g 
B)  1 g 
C)  12 amu 
D)  1 amu

Question 4

Which column of the periodic table contains the alkali metals?

Accepted Answer

A)  1A 
B)  2A 
C)  7A 
D)  8A 
A)  1A 
B)  2A 
C)  7A 
D)  8A

Question 5

Which of the following defines the atomic number of an atom?

Accepted Answer

A)  the number of protons in the atom 
B)  the number of neutrons in the atom 
C)  the total number of protons and neutrons in the atom 
D)  the total number of protons, neutrons, and electrons in the atom 
A)  the number of protons in the atom 
B)  the number of neutrons in the atom 
C)  the total number of protons and neutrons in the atom 
D)  the total number of protons, neutrons, and electrons in the atom

Question 6

What is the mass number of an atom that is made up of 27 protons, 32 neutrons, and 27 electrons?

Accepted Answer

A)  89 
B)  59 
C)  32 
D)  27 
A)  89 
B)  59 
C)  32 
D)  27

Question 7

Which of the following contains two species which are a pair of isotopes?

Accepted Answer

A)  14C and 14N 
B)  12C and 13C 
C)  both 14C and 14N and 12C and 13C 
D)  neither 14C and 14N or 12C and 13C 
A)  14C and 14N 
B)  12C and 13C 
C)  both 14C and 14N and 12C and 13C 
D)  neither 14C and 14N or 12C and 13C

Question 8

Which of the following statements is true of the nucleus of an atom?

Accepted Answer

A)  The nucleus occupies only a tiny fraction of the total volume of the atom, and most of the mass of the atom is concentrated in its nucleus. 
B)  The nucleus occupies a large fraction of the total volume of the atom, and most of the mass of the atom is concentrated in the region surrounding the nucleus. 
C)  The nucleus occupies a large fraction of the total volume of the atom, and most of the mass of the atom is concentrated in its nucleus. 
D)  The nucleus occupies only a tiny fraction of the total volume of the atom, and most of the mass of the atom is concentrated in the region surrounding the nucleus. 
A)  The nucleus occupies only a tiny fraction of the total volume of the atom, and most of the mass of the atom is concentrated in its nucleus. 
B)  The nucleus occupies a large fraction of the total volume of the atom, and most of the mass of the atom is concentrated in the region surrounding the nucleus. 
C)  The nucleus occupies a large fraction of the total volume of the atom, and most of the mass of the atom is concentrated in its nucleus. 
D)  The nucleus occupies only a tiny fraction of the total volume of the atom, and most of the mass of the atom is concentrated in the region surrounding the nucleus.

Question 9

Which of the following is true when comparing two electrons that are in different shells of an atom?

Accepted Answer

A)  The electron in the higher-numbered shell is closer to the nucleus and is easier to remove. 
B)  The electron in the higher-numbered shell is closer to the nucleus and is harder to remove. 
C)  The electron in the higher-numbered shell is farther from the nucleus and is easier to remove. 
D)  The electron in the higher-numbered shell is farther from the nucleus and is harder to remove. 
A)  The electron in the higher-numbered shell is closer to the nucleus and is easier to remove. 
B)  The electron in the higher-numbered shell is closer to the nucleus and is harder to remove. 
C)  The electron in the higher-numbered shell is farther from the nucleus and is easier to remove. 
D)  The electron in the higher-numbered shell is farther from the nucleus and is harder to remove.

Question 10

How many elements occur naturally as diatomic molecules?

Accepted Answer

A)  0 
B)  5 
C)  6 
D)  7 
A)  0 
B)  5 
C)  6 
D)  7

Question 11

What is the ionization energy of an atom?

Accepted Answer

A)  the energy released when an atom gains an electron 
B)  the energy released when an atom loses an electron 
C)  the energy required to add an electron to an atom 
D)  the energy required to remove an electron from an atom 
A)  the energy released when an atom gains an electron 
B)  the energy released when an atom loses an electron 
C)  the energy required to add an electron to an atom 
D)  the energy required to remove an electron from an atom

Question 12

Which of the chemical elements has the highest ionization energy?

Accepted Answer

A)  F 
B)  H 
C)  He 
D)  U 
A)  F 
B)  H 
C)  He 
D)  U

Question 13

Which language is the word "atom" derived from?

Accepted Answer

A)  Arabic 
B)  Greek 
C)  Hebrew 
D)  Latin 
A)  Arabic 
B)  Greek 
C)  Hebrew 
D)  Latin

Question 14

How many electrons can be accommodated in the fourth shell of an atom?

Accepted Answer

A)  2 
B)  8 
C)  18 
D)  32 
A)  2 
B)  8 
C)  18 
D)  32

Question 15

What is the name given to the lowest possible energy state of an electron?

Accepted Answer

A)  the zeroth state 
B)  the bottom state 
C)  the ground state 
D)  none of these 
A)  the zeroth state 
B)  the bottom state 
C)  the ground state 
D)  none of these

Question 16

When a strong magnet is brought near a sample that contains both iron and sulfur, the iron and the sulfur are not separated from one another. Which type of matter is this sample?

Accepted Answer

A)  It is a compound. 
B)  It is a homogeneous mixture. 
C)  It is a heterogeneous mixture. 
D)  The information given is not enough to answer this question. 
A)  It is a compound. 
B)  It is a homogeneous mixture. 
C)  It is a heterogeneous mixture. 
D)  The information given is not enough to answer this question.

Question 17

Which of the following is true of the ionization energy of elements?

Accepted Answer

A)  Ionization energy generally decreases as we move from left to right in the periodic table. 
B)  Ionization energy generally increases as we move from top to bottom in the periodic table. 
C)  Ionization energy generally increases as we move from left to right in the periodic table. 
D)  Ionization energy generally remains the same as we move from top to bottom in the periodic table. 
A)  Ionization energy generally decreases as we move from left to right in the periodic table. 
B)  Ionization energy generally increases as we move from top to bottom in the periodic table. 
C)  Ionization energy generally increases as we move from left to right in the periodic table. 
D)  Ionization energy generally remains the same as we move from top to bottom in the periodic table.

Question 18

If you could line up atoms of lead-208, approximately how many atoms are required to form a line 1 inch long? Note that an atom of lead-208 has a diameter of 1.6 x 10-10 m.

Accepted Answer

A)  82 
B)  208 
C)  8.2 x 107 
D)  1.6 x 1012 
A)  82 
B)  208 
C)  8.2 x 107 
D)  1.6 x 1012

Question 19

Which element is currently used to define the atomic mass unit?

Accepted Answer

A)  hydrogen-1 
B)  carbon-12 
C)  oxygen-16 
D)  none of these 
A)  hydrogen-1 
B)  carbon-12 
C)  oxygen-16 
D)  none of these

Question 20

Which element has the following ground-state electron configuration?

Accepted Answer

A)  Al 
B)  Na 
C)  B 
D)  Ga 
E)  none of these 
A)  Al 
B)  Na 
C)  B 
D)  Ga 
E)  none of these

Exam 2: Atoms

Which of the following statements correctly describes ionization energies?

What are the elements in the "B" columns of the periodic table called?

What is the approximate mass of a proton?

Which column of the periodic table contains the alkali metals?

Which of the following defines the atomic number of an atom?

What is the mass number of an atom that is made up of 27 protons, 32 neutrons, and 27 electrons?

Which of the following contains two species which are a pair of isotopes?

Which of the following statements is true of the nucleus of an atom?

Which of the following is true when comparing two electrons that are in different shells of an atom?

How many elements occur naturally as diatomic molecules?

What is the ionization energy of an atom?

Which of the chemical elements has the highest ionization energy?

Which language is the word "atom" derived from?

How many electrons can be accommodated in the fourth shell of an atom?

What is the name given to the lowest possible energy state of an electron?

When a strong magnet is brought near a sample that contains both iron and sulfur, the iron and the sulfur are not separated from one another. Which type of matter is this sample?

Which of the following is true of the ionization energy of elements?

If you could line up atoms of lead-208, approximately how many atoms are required to form a line 1 inch long? Note that an atom of lead-208 has a diameter of 1.6 x 10-10 m.

Which element is currently used to define the atomic mass unit?

Which element has the following ground-state electron configuration?

Matter, Energy, and Measurement

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

If you could line up atoms of lead-208, approximately how many atoms are required to form a line 1 inch long? Note that an atom of lead-208 has a diameter of 1.6 x 10^-10 m.