Question 1

The isotope ${ }_{7}^{14} \mathrm{~N}$ has how many electrons?

Accepted Answer

A) 13 
B) 14 
C) 6 
D) 7 
A) 13 
B) 14 
C) 6 
D) 7

Question 2

What is the full electron configuration of oxygen?

Accepted Answer

The answer of What is the full electron configuration of...

Question 3

Uranium metal, made only of uranium atoms, has how many protons in each atom?

Accepted Answer

A) 90 
B) 238 
C) 235 
D) 92 
A) 90 
B) 238 
C) 235 
D) 92

Question 4

An electron in an excited state has not absorbed energy.

Accepted Answer

A) True 
 B)False

Question 5

What evidence exists that electrons are found in quantized energy levels?

Accepted Answer

A) Line spectra of all the primary colors 
B) Line spectra with a limited number of lines of color 
C) Continuous wave spectra from photons 
D) There is no evidence for this. 
A) Line spectra of all the primary colors 
B) Line spectra with a limited number of lines of color 
C) Continuous wave spectra from photons 
D) There is no evidence for this.

Question 6

What is the law of definite proportions?

Accepted Answer

A statement that a c

Question 7

Dalton's Atomic Theory states that all atoms of a given element are what?

Accepted Answer

A) Identical 
B) Stable 
C) Of the same mass 
D) Of the same charge 
A) Identical 
B) Stable 
C) Of the same mass 
D) Of the same charge

Question 8

An s orbital has what shape?

Accepted Answer

A) Circular 
B) Spherical 
C) Oblong 
D) Dumbbell 
A) Circular 
B) Spherical 
C) Oblong 
D) Dumbbell

Question 9

In what is now known as Rutherford's gold foil experiment, almost all the alpha particles aimed at a gold foil went straight through, which led Rutherford to what conclusion?

Accepted Answer

The majority of the

Question 10

Which element has the electron configuration 1s2 2s2 2p5?

Accepted Answer

A) Neon 
B) Oxygen 
C) Chlorine 
D) Fluorine 
A) Neon 
B) Oxygen 
C) Chlorine 
D) Fluorine

Question 11

Rutherford's gold foil experiment proved what about matter?

Accepted Answer

A) That it is continuous 
B) That it has regions of dense, positive, and dense, negative charge 
C) That it has regions of dense, positive charge 
D) Nothing, really 
A) That it is continuous 
B) That it has regions of dense, positive, and dense, negative charge 
C) That it has regions of dense, positive charge 
D) Nothing, really

Question 12

Who is considered the discoverer of the Law of Conservation of Mass?

Accepted Answer

A) Lavoisier 
B) Gassendi 
C) Dalton 
D) Newton 
A) Lavoisier 
B) Gassendi 
C) Dalton 
D) Newton

Question 13

One of the first proponents of the atomic theory was:

Accepted Answer

A) Socrates. 
B) Aristotle. 
C) Sophocles. 
D) Democritus. 
A) Socrates. 
B) Aristotle. 
C) Sophocles. 
D) Democritus.

Question 14

Dalton's law of multiple proportions states that when two or more elements combine in different ratios, different compounds are formed.

Accepted Answer

A) True 
 B)False

Question 15

To what does a different energy level often correspond in an atom?

Accepted Answer

A differen

Question 16

What element and isotope has Z= 43 and 56 neutrons?

Accepted Answer

A)  ${ }_{43}^{ 56} \mathrm{Tc}$ 
B)  ${ }_{43}^{ 99} \mathrm{Tc}$ 
C)  ${ }_{43}^{ 96} \mathrm{Tc}$ 
D)  ${ }_{13}^{ 56} \mathrm{Tc}$ 
A)  ${ }_{43}^{ 56} \mathrm{Tc}$ 
B)  ${ }_{43}^{ 99} \mathrm{Tc}$ 
C)  ${ }_{43}^{ 96} \mathrm{Tc}$ 
D)  ${ }_{13}^{ 56} \mathrm{Tc}$

Question 17

Which isotope of neon is the major one?

Accepted Answer

A) 20 
B) 21 
C) 22 
D) 23 
A) 20 
B) 21 
C) 22 
D) 23

Question 18

The electron configuration 1s2 2s2 2p1 is correct for which element?

Accepted Answer

A) He 
B) Be 
C) C 
D) B 
A) He 
B) Be 
C) C 
D) B

Question 19

When 24 g of methane gas (CH4) is combined with 16 g of oxygen gas, if 15 g of water is collected and the only other product is carbon dioxide, how much carbon dioxide must have been released?

Accepted Answer

A) 30 g 
B) 2.0 g 
C) 40 g 
D) 15 g 
A) 30 g 
B) 2.0 g 
C) 40 g 
D) 15 g

Question 20

An element has Z=38 and 50 neutrons, what element and isotope is it?

Accepted Answer

A)  ${ }_{38}^{50} \mathrm{Sr}$ 
B)  ${ }_{38}^{88} \mathrm{Sr}$ 
C)  ${ }_{50}^{38} \mathrm{Sr}$ 
D)  ${ }_{50}^{88} \mathrm{Sr}$ 
A)  ${ }_{38}^{50} \mathrm{Sr}$ 
B)  ${ }_{38}^{88} \mathrm{Sr}$ 
C)  ${ }_{50}^{38} \mathrm{Sr}$ 
D)  ${ }_{50}^{88} \mathrm{Sr}$

The isotope ${ }_{7}^{14} \mathrm{~N}$ has how many electrons?

What is the full electron configuration of oxygen?

Uranium metal, made only of uranium atoms, has how many protons in each atom?

An electron in an excited state has not absorbed energy.

What evidence exists that electrons are found in quantized energy levels?

What is the law of definite proportions?

Dalton's Atomic Theory states that all atoms of a given element are what?

An s orbital has what shape?

In what is now known as Rutherford's gold foil experiment, almost all the alpha particles aimed at a gold foil went straight through, which led Rutherford to what conclusion?

Which element has the electron configuration 1s² 2s² 2p⁵?

Rutherford's gold foil experiment proved what about matter?

Who is considered the discoverer of the Law of Conservation of Mass?

One of the first proponents of the atomic theory was:

Dalton's law of multiple proportions states that when two or more elements combine in different ratios, different compounds are formed.

To what does a different energy level often correspond in an atom?

What element and isotope has Z= 43 and 56 neutrons?

Which isotope of neon is the major one?

The electron configuration 1s² 2s² 2p¹ is correct for which element?

When 24 g of methane gas (CH₄) is combined with 16 g of oxygen gas, if 15 g of water is collected and the only other product is carbon dioxide, how much carbon dioxide must have been released?

An element has Z=38 and 50 neutrons, what element and isotope is it?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

Exam 3: Understanding Atoms

The isotope 714 N{ }_{7}^{14} \mathrm{~N}714​ N has how many electrons?

What is the full electron configuration of oxygen?

Uranium metal, made only of uranium atoms, has how many protons in each atom?

An electron in an excited state has not absorbed energy.

What evidence exists that electrons are found in quantized energy levels?

What is the law of definite proportions?

Dalton's Atomic Theory states that all atoms of a given element are what?

An s orbital has what shape?

In what is now known as Rutherford's gold foil experiment, almost all the alpha particles aimed at a gold foil went straight through, which led Rutherford to what conclusion?

Which element has the electron configuration 1s2 2s2 2p5?

Rutherford's gold foil experiment proved what about matter?

Who is considered the discoverer of the Law of Conservation of Mass?

One of the first proponents of the atomic theory was:

Dalton's law of multiple proportions states that when two or more elements combine in different ratios, different compounds are formed.

To what does a different energy level often correspond in an atom?

What element and isotope has Z= 43 and 56 neutrons?

Which isotope of neon is the major one?

The electron configuration 1s2 2s2 2p1 is correct for which element?

When 24 g of methane gas (CH4) is combined with 16 g of oxygen gas, if 15 g of water is collected and the only other product is carbon dioxide, how much carbon dioxide must have been released?

An element has Z=38 and 50 neutrons, what element and isotope is it?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

The isotope ${ }_{7}^{14} \mathrm{~N}$ has how many electrons?

Which element has the electron configuration 1s² 2s² 2p⁵?

The electron configuration 1s² 2s² 2p¹ is correct for which element?

When 24 g of methane gas (CH₄) is combined with 16 g of oxygen gas, if 15 g of water is collected and the only other product is carbon dioxide, how much carbon dioxide must have been released?