Question 1

The elements of the group 7A will all form ions. These ions will be _____ and will have a charge of _____.

Accepted Answer

A)  cations; 2+ 
B)  anions; 2 − 
C)  cations; 3+ 
D)  anions; 1 − 
E)  cations; 1+ 
A)  cations; 2+ 
B)  anions; 2 − 
C)  cations; 3+ 
D)  anions; 1 − 
E)  cations; 1+

Question 2

Which of these is a nonmetal?

Accepted Answer

A)  Mg 
B)  Br 
C)  Cu 
D)  Ge 
E)  Li 
A)  Mg 
B)  Br 
C)  Cu 
D)  Ge 
E)  Li

Question 3

Which of these statements best describes the formation of an anion?

Accepted Answer

A)  An atom loses one or more electrons and becomes positively charged. 
B)  An atom loses one or more electrons and becomes negatively charged. 
C)  An atom gains one or more electrons and becomes positively charged. 
D)  An atom gains one or more electrons and becomes negatively charged. 
E)  An atom gains one or more electrons and becomes electrically neutral. 
A)  An atom loses one or more electrons and becomes positively charged. 
B)  An atom loses one or more electrons and becomes negatively charged. 
C)  An atom gains one or more electrons and becomes positively charged. 
D)  An atom gains one or more electrons and becomes negatively charged. 
E)  An atom gains one or more electrons and becomes electrically neutral.

Question 4

The number of protons in a neutral atom is equal to the _____ of the atom.

Accepted Answer

A)  mass 
B)  atomic weight 
C)  atomic number 
D)  mass number 
E)  valence electron number 
A)  mass 
B)  atomic weight 
C)  atomic number 
D)  mass number 
E)  valence electron number

Question 5

The chemical behavior of an element is determined by the _____.

Accepted Answer

A)  number of neutrons 
B)  number of electrons 
C)  number of isotopes 
D)  atomic number 
E)  atomic mass 
A)  number of neutrons 
B)  number of electrons 
C)  number of isotopes 
D)  atomic number 
E)  atomic mass

Question 6

Mendeleev organized the elements of the periodic table in order of increasing _____.

Accepted Answer

A)  atomic number 
B)  atomic mass 
C)  number of electrons 
D)  number of isotopes 
E)  number of neutrons 
A)  atomic number 
B)  atomic mass 
C)  number of electrons 
D)  number of isotopes 
E)  number of neutrons

Question 7

How many protons (p), neutrons (n), and electrons (e) are in an atom of 235U?

Accepted Answer

A)  92 p, 146 n, 92 e 
B)  92 p, 143 n, 92 e 
C)  92 p, 92 n, 146 e 
D)  92 p, 92 n, 92 e 
E)  92 p, 51 n, 92 e 
A)  92 p, 146 n, 92 e 
B)  92 p, 143 n, 92 e 
C)  92 p, 92 n, 146 e 
D)  92 p, 92 n, 92 e 
E)  92 p, 51 n, 92 e

Question 8

Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and Cu-65 has a mass of 64.928 amu. Based on the atomic mass of copper, which isotope has a higher fractional abundance?

Accepted Answer

A)  Cu-63 
B)  Cu-65 
C)  Cu-63 and Cu-65 have equal fractional abundances. 
D)  Insufficient data 
E)  Fractional abundance is independent of isotopes. 
A)  Cu-63 
B)  Cu-65 
C)  Cu-63 and Cu-65 have equal fractional abundances. 
D)  Insufficient data 
E)  Fractional abundance is independent of isotopes.

The elements of the group 7A will all form ions. These ions will be _ and will have a charge of _.

Which of these is a nonmetal?

Which of these statements best describes the formation of an anion?

The number of protons in a neutral atom is equal to the _____ of the atom.

The chemical behavior of an element is determined by the _____.

Mendeleev organized the elements of the periodic table in order of increasing _____.

How many protons (p), neutrons (n), and electrons (e) are in an atom of ²³⁵U?

Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and Cu-65 has a mass of 64.928 amu. Based on the atomic mass of copper, which isotope has a higher fractional abundance?

Molecular Reasons

The Chemists Toolbox

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

Filters

Exam 3: Atoms and Elements

The elements of the group 7A will all form ions. These ions will be _____ and will have a charge of _____.

Which of these is a nonmetal?

Which of these statements best describes the formation of an anion?

The number of protons in a neutral atom is equal to the _____ of the atom.

The chemical behavior of an element is determined by the _____.

Mendeleev organized the elements of the periodic table in order of increasing _____.

How many protons (p), neutrons (n), and electrons (e) are in an atom of 235U?

Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and Cu-65 has a mass of 64.928 amu. Based on the atomic mass of copper, which isotope has a higher fractional abundance?

Molecular Reasons

The Chemists Toolbox

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

Filters

The elements of the group 7A will all form ions. These ions will be _ and will have a charge of _.

How many protons (p), neutrons (n), and electrons (e) are in an atom of ²³⁵U?