Question 1

How many electrons are found in a Fe₃+ ion?

Accepted Answer

A)  23 
B)  26 
C)  29 
D)  56 
A)  23 
B)  26 
C)  29 
D)  56 A

Question 2

The structure of individual atoms can roughly be described as ________.

Accepted Answer

A)  positively charged center and mostly empty space 
B)  an even mixture of mass and charge scattered throughout a spherical shape 
C)  positively charged, low-mass pieces in orbit around a massive, negatively charged center 
D)  positively charged pieces in orbit around a low-mass, negatively charged center 
A)  positively charged center and mostly empty space 
B)  an even mixture of mass and charge scattered throughout a spherical shape 
C)  positively charged, low-mass pieces in orbit around a massive, negatively charged center 
D)  positively charged pieces in orbit around a low-mass, negatively charged center A

Question 3

Which is expected to be the most chemically similar element to phosphorus?

Accepted Answer

A)  S 
B)  As 
C)  Se 
D)  O 
A)  S 
B)  As 
C)  Se 
D)  O B

Question 4

Which of the following pairs are isotopes?

Accepted Answer

A)  "Ca₂+ and Mg2+" 
B)  "199Hg and 200Hg" 
C)  "18O and 19F" 
D)  "238U and 238Np" 
A)  "Ca₂+ and Mg2+" 
B)  "199Hg and 200Hg" 
C)  "18O and 19F" 
D)  "238U and 238Np"

Question 5

How is the term "atomic number" defined for a given atom?

Accepted Answer

A)  as the mass of one mole of that element or isotope 
B)  as the sum of the number of protons, neutrons, and electrons 
C)  as the sum of the number of protons and neutrons in the nucleus 
D)  as the number of protons in the nucleus 
A)  as the mass of one mole of that element or isotope 
B)  as the sum of the number of protons, neutrons, and electrons 
C)  as the sum of the number of protons and neutrons in the nucleus 
D)  as the number of protons in the nucleus

Question 6

Ionization energy ________ from top to bottom in a group and ________ from left to right in a period.

Accepted Answer

A)  increases; increases 
B)  increases; decreases 
C)  decreases; increases 
D)  decreases; decreases 
A)  increases; increases 
B)  increases; decreases 
C)  decreases; increases 
D)  decreases; decreases

Question 7

Fr+ is called ________.

Accepted Answer

A)  a cation 
B)  an anion 
C)  an isotope 
D)  a non-metal 
A)  a cation 
B)  an anion 
C)  an isotope 
D)  a non-metal

Question 8

Identify X in the expression   X.

Accepted Answer

A)  silver 
B)  gold 
C)  bohrium 
D)  cobalt 
E)  neodymium 
A)  silver 
B)  gold 
C)  bohrium 
D)  cobalt 
E)  neodymium

Question 9

The breakthrough Dmitri Mendeleev had when constructing the periodic table occurred ________.

Accepted Answer

A)  when J. J. Thomson discovered the electron 
B)  when Sir James Chadwick discovered the neutron 
C)  when Thomson and E. Goldstein discovered the proton 
D)  when Mendeleev placed the elements in a sequence of increasing atomic mass 
A)  when J. J. Thomson discovered the electron 
B)  when Sir James Chadwick discovered the neutron 
C)  when Thomson and E. Goldstein discovered the proton 
D)  when Mendeleev placed the elements in a sequence of increasing atomic mass

Question 10

What is the atomic number of uranium-235?

Accepted Answer

A)  235 
B)  238 
C)  92 
D)  143 
A)  235 
B)  238 
C)  92 
D)  143

Question 11

What name is commonly given to the elements of Group IIA of the periodic table?

Accepted Answer

A)  alkaline earth metals 
B)  transition metals 
C)  platinum metals 
D)  alkali metals 
A)  alkaline earth metals 
B)  transition metals 
C)  platinum metals 
D)  alkali metals

Question 12

Barium is an alkali earth metal.

Accepted Answer

A) True 
 B)False

Question 13

An alpha particle consists of two protons and two neutrons.

Accepted Answer

A) True 
 B)False

Question 14

The atomic weight for an atom is the weighted average of all the naturally occurring isotopes.

Accepted Answer

A) True 
 B)False

Question 15

Iodine is the only non-metal that is a solid at room temperature.

Accepted Answer

A) True 
 B)False

Question 16

Write the atomic symbols for the following neutral isotopes.
-Why are the elements in Group VIIIA called the "noble gases"?

Accepted Answer

The noble gases are

Question 17

Lanthanides are rare earth elements.

Accepted Answer

A) True 
 B)False

Question 18

Identify X in the expression   X.

Accepted Answer

A)  zinc 
B)  iron 
C)  iridium 
D)  cesium 
E)  manganese 
A)  zinc 
B)  iron 
C)  iridium 
D)  cesium 
E)  manganese

Question 19

Ions are ________.

Accepted Answer

A)  atoms that have gained electrons 
B)  atoms or groups of atoms with a net electrical charge that is not equal to zero 
C)  atoms that have lost electrons 
D)  all of the above 
A)  atoms that have gained electrons 
B)  atoms or groups of atoms with a net electrical charge that is not equal to zero 
C)  atoms that have lost electrons 
D)  all of the above

Question 20

Atoms combine to form molecules (compounds) in simple, whole number ratios.

Accepted Answer

A) True 
 B)False

How many electrons are found in a Fe₃+ ion?

The structure of individual atoms can roughly be described as ________.

Which is expected to be the most chemically similar element to phosphorus?

Which of the following pairs are isotopes?

How is the term "atomic number" defined for a given atom?

Ionization energy from top to bottom in a group and from left to right in a period.

Fr+ is called ________.

Identify X in the expression X.

The breakthrough Dmitri Mendeleev had when constructing the periodic table occurred ________.

What is the atomic number of uranium-235?

What name is commonly given to the elements of Group IIA of the periodic table?

Barium is an alkali earth metal.

An alpha particle consists of two protons and two neutrons.

The atomic weight for an atom is the weighted average of all the naturally occurring isotopes.

Iodine is the only non-metal that is a solid at room temperature.

Write the atomic symbols for the following neutral isotopes. -Why are the elements in Group VIIIA called the "noble gases"?

Lanthanides are rare earth elements.

Identify X in the expression X.

Ions are ________.

Atoms combine to form molecules (compounds) in simple, whole number ratios.

What Is Chemistry

The Numerical Side of Chemistry

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 3: The Evolution of Atomic Theory

How many electrons are found in a Fe₃+ ion?

The structure of individual atoms can roughly be described as ________.

Which is expected to be the most chemically similar element to phosphorus?

Which of the following pairs are isotopes?

How is the term "atomic number" defined for a given atom?

Ionization energy ________ from top to bottom in a group and ________ from left to right in a period.

Fr+ is called ________.

Identify X in the expression X.

The breakthrough Dmitri Mendeleev had when constructing the periodic table occurred ________.

What is the atomic number of uranium-235?

What name is commonly given to the elements of Group IIA of the periodic table?

Barium is an alkali earth metal.

An alpha particle consists of two protons and two neutrons.

The atomic weight for an atom is the weighted average of all the naturally occurring isotopes.

Iodine is the only non-metal that is a solid at room temperature.

Write the atomic symbols for the following neutral isotopes. -Why are the elements in Group VIIIA called the "noble gases"?

Lanthanides are rare earth elements.

Identify X in the expression X.

Ions are ________.

Atoms combine to form molecules (compounds) in simple, whole number ratios.

What Is Chemistry

The Numerical Side of Chemistry

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Ionization energy from top to bottom in a group and from left to right in a period.