Question 1

Calculate the number of moles of lead in a 442 gram lead anvil.

Accepted Answer

A) 0.468 moles 
B) 2.13 moles 
C) 96.97 moles 
D) 6.022 × 1023 moles 
E) 1.28 × 1024 moles 
A) 0.468 moles 
B) 2.13 moles 
C) 96.97 moles 
D) 6.022 × 1023 moles 
E) 1.28 × 1024 moles

Question 2

Which of these elements has three valence electrons?

Accepted Answer

A) Mg 
B) Li 
C) Al 
D) S 
E) Cl 
A) Mg 
B) Li 
C) Al 
D) S 
E) Cl

Question 3

Bromine is a member of what group\family?

Accepted Answer

A) halogens 
B) noble gases 
C) alkali metals 
D) transition metals 
E) alkaline earth metals 
A) halogens 
B) noble gases 
C) alkali metals 
D) transition metals 
E) alkaline earth metals

Question 4

Which scientist is responsible for the organization of the modern periodic table?

Accepted Answer

A) Bohr 
B) Galileo 
C) Dalton 
D) Avogadro 
E) Mendeleev 
A) Bohr 
B) Galileo 
C) Dalton 
D) Avogadro 
E) Mendeleev

Question 5

What are the Z and A values for an atom of silicon which contains 15 neutrons?

Accepted Answer

A) Z=14, A=15 
B) Z=15, A=14 
C) Z=29, A=14 
D) Z=14, A=29 
E) Z=15, A=29 
A) Z=14, A=15 
B) Z=15, A=14 
C) Z=29, A=14 
D) Z=14, A=29 
E) Z=15, A=29

Question 6

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 7

Which of the following is true?

Accepted Answer

A) Argon and chlorine have the same number of electrons. 
B) Argon and chlorine have the same number of valence electrons. 
C) Argon and neon have the same number of electrons. 
D) Argon and neon have the same number of valence electrons. 
E) There is more than one correct statement. 
A) Argon and chlorine have the same number of electrons. 
B) Argon and chlorine have the same number of valence electrons. 
C) Argon and neon have the same number of electrons. 
D) Argon and neon have the same number of valence electrons. 
E) There is more than one correct statement.

Question 8

Which element is not a nonmetal?

Accepted Answer

A) P 
B) I 
C) N 
D) K 
E) Cl 
A) P 
B) I 
C) N 
D) K 
E) Cl

Question 9

Radon − 222 has _____ protons, _____ neutrons, and _____ electrons.

Accepted Answer

A) 86, 86, 86 
B) 86, 222, 86 
C) 86, 136, 86 
D) 86, 136, 222 
E) 86, 222, 308 
A) 86, 86, 86 
B) 86, 222, 86 
C) 86, 136, 86 
D) 86, 136, 222 
E) 86, 222, 308

Question 10

Calculate the number of moles in a 2.98 g sample of aluminum.

Accepted Answer

A) 0.0124 moles 
B) 0.110 moles 
C) 80.4 moles 
D) 1.79 × 1024 moles 
E) 1.62 × 1025 moles 
A) 0.0124 moles 
B) 0.110 moles 
C) 80.4 moles 
D) 1.79 × 1024 moles 
E) 1.62 × 1025 moles

Question 11

What is the correct number of atoms in one mole of neon?

Accepted Answer

A) 10 
B) 11 
C) 6.022 × 1023 
D) 20 
E) 12 
A) 10 
B) 11 
C) 6.022 × 1023 
D) 20 
E) 12

Question 12

Which of these statements about atoms is incorrect ?

Accepted Answer

A) Atoms are the smallest visible amount of an element. 
B) Atoms are composed of protons, neutrons, and electrons. 
C) Atoms are the building blocks of all matter. 
D) Atoms are the smallest identifiable unit of an element. 
E) There are 91 different naturally occurring atoms. 
A) Atoms are the smallest visible amount of an element. 
B) Atoms are composed of protons, neutrons, and electrons. 
C) Atoms are the building blocks of all matter. 
D) Atoms are the smallest identifiable unit of an element. 
E) There are 91 different naturally occurring atoms.

Question 13

Which of the following is true?

Accepted Answer

A) Argon and chlorine have a different number of electrons. 
B) Argon and chlorine have a different number of valence electrons. 
C) Argon and neon have a different number of electrons. 
D) Argon and neon have a different number of valence electrons. 
E) There is more than one correct statement. 
A) Argon and chlorine have a different number of electrons. 
B) Argon and chlorine have a different number of valence electrons. 
C) Argon and neon have a different number of electrons. 
D) Argon and neon have a different number of valence electrons. 
E) There is more than one correct statement.

Question 14

When an oxygen atom gains two electrons, it becomes a(n)_____ with a charge of _____.

Accepted Answer

A) anion, 2+ 
B) anion, 2 −  
C) cation, 2 −  
D) cation, 2+ 
E) cation, 0 
A) anion, 2+ 
B) anion, 2 −  
C) cation, 2 −  
D) cation, 2+ 
E) cation, 0

Question 15

Strontium is a member of what group\family?

Accepted Answer

A) halogens 
B) noble gases 
C) alkali metals 
D) transition metals 
E) alkaline earth metals 
A) halogens 
B) noble gases 
C) alkali metals 
D) transition metals 
E) alkaline earth metals

Question 16

Which family\group is largely unreactive?

Accepted Answer

A) Halogens 
B) Noble gases 
C) Alkali metals 
D) Transition metals 
E) Alkaline earth metals 
A) Halogens 
B) Noble gases 
C) Alkali metals 
D) Transition metals 
E) Alkaline earth metals

Question 17

Which of these elements has seven valence electrons?

Accepted Answer

A) Mg 
B) Li 
C) Al 
D) S 
E) Cl 
A) Mg 
B) Li 
C) Al 
D) S 
E) Cl

Question 18

Chlorine has two isotopes, 35Cl and 37Cl that have the respective percent abundance's of 75.77% and 24.23% and masses of 34.9688 amu and 36.9659 amu. Calculate the atomic weight of chlorine.

Accepted Answer

A) 37.54 amu 
B) 36.65 amu 
C) 35.45 amu 
D) 34.97 amu 
E) 36.97 amu 
A) 37.54 amu 
B) 36.65 amu 
C) 35.45 amu 
D) 34.97 amu 
E) 36.97 amu

Question 19

Which of the following is not true for an atom that has an atomic number of 19 and a mass number of 41?

Accepted Answer

A) The atom contains 22 neutrons. 
B) The atom is potassium. 
C) The atom contains 19 neutrons. 
D) The atom contains 19 electrons. 
E) The atom contains 19 protons. 
A) The atom contains 22 neutrons. 
B) The atom is potassium. 
C) The atom contains 19 neutrons. 
D) The atom contains 19 electrons. 
E) The atom contains 19 protons.

Question 20

Determine the correct number of protons and electrons in FS1U1P1?S1S1P0.

Accepted Answer

A) 9 protons, 10 electrons 
B) 9 protons, 11 electrons 
C) 10 protons, 9 electrons 
D) 11 protons, 10 electrons 
E) 19 protons, 20 electrons 
A) 9 protons, 10 electrons 
B) 9 protons, 11 electrons 
C) 10 protons, 9 electrons 
D) 11 protons, 10 electrons 
E) 19 protons, 20 electrons

Calculate the number of moles of lead in a 442 gram lead anvil.

Which of these elements has three valence electrons?

Bromine is a member of what group\family?

Which scientist is responsible for the organization of the modern periodic table?

What are the Z and A values for an atom of silicon which contains 15 neutrons?

Which of these is a nonmetal?

Which of the following is true?

Which element is not a nonmetal?

Radon − 222 has ___ protons, _ neutrons, and ___ electrons.

Calculate the number of moles in a 2.98 g sample of aluminum.

What is the correct number of atoms in one mole of neon?

Which of these statements about atoms is incorrect ?

Which of the following is true?

When an oxygen atom gains two electrons, it becomes a(n)_ with a charge of _.

Strontium is a member of what group\family?

Which family\group is largely unreactive?

Which of these elements has seven valence electrons?

Chlorine has two isotopes, 35Cl and 37Cl that have the respective percent abundance's of 75.77% and 24.23% and masses of 34.9688 amu and 36.9659 amu. Calculate the atomic weight of chlorine.

Which of the following is not true for an atom that has an atomic number of 19 and a mass number of 41?

Determine the correct number of protons and electrons in F^?.

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Exam 3: Atoms and Elements

Calculate the number of moles of lead in a 442 gram lead anvil.

Which of these elements has three valence electrons?

Bromine is a member of what group\family?

Which scientist is responsible for the organization of the modern periodic table?

What are the Z and A values for an atom of silicon which contains 15 neutrons?

Which of these is a nonmetal?

Which of the following is true?

Which element is not a nonmetal?

Radon − 222 has _____ protons, _____ neutrons, and _____ electrons.

Calculate the number of moles in a 2.98 g sample of aluminum.

What is the correct number of atoms in one mole of neon?

Which of these statements about atoms is incorrect ?

Which of the following is true?

When an oxygen atom gains two electrons, it becomes a(n)_____ with a charge of _____.

Strontium is a member of what group\family?

Which family\group is largely unreactive?

Which of these elements has seven valence electrons?

Chlorine has two isotopes, 35Cl and 37Cl that have the respective percent abundance's of 75.77% and 24.23% and masses of 34.9688 amu and 36.9659 amu. Calculate the atomic weight of chlorine.

Which of the following is not true for an atom that has an atomic number of 19 and a mass number of 41?

Determine the correct number of protons and electrons in F?.

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

Filters

Radon − 222 has ___ protons, _ neutrons, and ___ electrons.

When an oxygen atom gains two electrons, it becomes a(n)_ with a charge of _.

Determine the correct number of protons and electrons in F^?.