Question 1

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3?

Accepted Answer

A) Arsenic 
B) Antimony 
C) Germanium 
D) Selenium 
A) Arsenic 
B) Antimony 
C) Germanium 
D) Selenium

Question 2

How is the full electron configuration of zinc represented?

Accepted Answer

A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 
B) 1s2 2s2 2p6 3s2 3p6 4s3 3d9 
C) 1s2 2s2 2p6 3s2 3p6 3s2 3d10 
D) 1s2 2s2 2p6 3s2 3p6 3s2 3d9 
A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 
B) 1s2 2s2 2p6 3s2 3p6 4s3 3d9 
C) 1s2 2s2 2p6 3s2 3p6 3s2 3d10 
D) 1s2 2s2 2p6 3s2 3p6 3s2 3d9

Question 3

How much carbon dioxide is needed to react with 4.0 g of sodium hydroxide to produce 8.4 g of sodium hydrogen carbonate as a product?

Accepted Answer

A) 4.4 g 
B) 12.4 g 
C) 0.4 g 
D) 4.0 g 
A) 4.4 g 
B) 12.4 g 
C) 0.4 g 
D) 4.0 g

Question 4

According to Leucippus, what existed in spaces where there were no atoms?

Accepted Answer

A) Air 
B) Water 
C) Sunlight 
D) Vacuum 
A) Air 
B) Water 
C) Sunlight 
D) Vacuum

Question 5

To what two variables is the speed of light equal?

Accepted Answer

Wavelength

Question 6

A material uniformly containing 30 protons and 36 neutrons is what isotope and element?

Accepted Answer

A)  ${ }_{66}^{30} \mathrm{Zn}$ 
B)  ${ }_{30}^{36} \mathrm{Zn}$ 
C)  ${ }_{30}^{66} \mathrm{Zn}$ 
D)  ${ }_{36}^{66} \mathrm{Zn}$ 
A)  ${ }_{66}^{30} \mathrm{Zn}$ 
B)  ${ }_{30}^{36} \mathrm{Zn}$ 
C)  ${ }_{30}^{66} \mathrm{Zn}$ 
D)  ${ }_{36}^{66} \mathrm{Zn}$

Question 7

The shape of the electron orbital changes as what else about the electron changes?

Accepted Answer

A) The energy level increases. 
B) The size increases. 
C) The polarity increases. 
D) The overall energy stabilizes. 
A) The energy level increases. 
B) The size increases. 
C) The polarity increases. 
D) The overall energy stabilizes.

Question 8

Where besides water are the isotopes of oxygen studied, when looking at the ancient Earth?

Accepted Answer

In the car

Question 9

Light with a wavelength of 1.5 × 102 m has what frequency?

Accepted Answer

A) 2.0 × 106 /s 
B) 0.50 × 106 /s 
C) 2.0 × 1010 /s 
D) 0.50 × 1010 /s 
A) 2.0 × 106 /s 
B) 0.50 × 106 /s 
C) 2.0 × 1010 /s 
D) 0.50 × 1010 /s

Question 10

Lead from gunshot residue is detected by measuring emitted light that corresponds to what wavelength?

Accepted Answer

The answer of Lead from gunshot residue is detected by...

Question 11

Bromine is mostly two isotopes, neither of which is bromine-80. Which is the predominant one?

Accepted Answer

A) 82 
B) 81 
C) 79 
D) 78 
A) 82 
B) 81 
C) 79 
D) 78

Question 12

To what does the color of each line in a spectrum correspond?

Accepted Answer

The transition of an

Question 13

When alpha particles pass through a thin, gold foil, and almost all of them are not deflected at all, what does that indicate about the make-up of matter?

Accepted Answer

It indicat

Question 14

Which group of elements is called the d-block elements?

Accepted Answer

The transi

Question 15

How many electrons are in atoms of Co?

Accepted Answer

A) 27 
B) 28 
C) 58 
D) 59 
A) 27 
B) 28 
C) 58 
D) 59

Question 16

The atomic mass number is indicated by what letter?

Accepted Answer

A) A 
B) M 
C) p 
D) p+n 
A) A 
B) M 
C) p 
D) p+n

Question 17

When an element has Z=10 and 10 neutrons, what element and isotope are present?

Accepted Answer

A)  ${ }_{10}^{21} \mathrm{Ne}$ 
B)  ${ }_{10}^{20} \mathrm{Ne}$ 
C)  ${ }_{20}^{10} \mathrm{Ca}$ 
D)  ${ }_{10}^{10} \mathrm{Ca}$ 
A)  ${ }_{10}^{21} \mathrm{Ne}$ 
B)  ${ }_{10}^{20} \mathrm{Ne}$ 
C)  ${ }_{20}^{10} \mathrm{Ca}$ 
D)  ${ }_{10}^{10} \mathrm{Ca}$

Question 18

The Heisenberg Uncertainty Principle relates what two physical phenomena associated with an electron?

Accepted Answer

A) Wavelength and momentum 
B) Position and velocity 
C) Isotopes and position 
D) Momentum and position 
A) Wavelength and momentum 
B) Position and velocity 
C) Isotopes and position 
D) Momentum and position

Question 19

The element Fe, as an isotope iron-56, contains how many neutrons?

Accepted Answer

A) 26 
B) 29 
C) 30 
D) 56 
A) 26 
B) 29 
C) 30 
D) 56

Question 20

The isotope of osmium with the symbol ${ }_{75}^{190} \mathrm{~Os}$ has how many protons?

Accepted Answer

A) 75 
B) 190 
C) 115 
D) None of the above. 
A) 75 
B) 190 
C) 115 
D) None of the above.

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³?

How is the full electron configuration of zinc represented?

How much carbon dioxide is needed to react with 4.0 g of sodium hydroxide to produce 8.4 g of sodium hydrogen carbonate as a product?

According to Leucippus, what existed in spaces where there were no atoms?

To what two variables is the speed of light equal?

A material uniformly containing 30 protons and 36 neutrons is what isotope and element?

The shape of the electron orbital changes as what else about the electron changes?

Where besides water are the isotopes of oxygen studied, when looking at the ancient Earth?

Light with a wavelength of 1.5 × 10² m has what frequency?

Lead from gunshot residue is detected by measuring emitted light that corresponds to what wavelength?

Bromine is mostly two isotopes, neither of which is bromine-80. Which is the predominant one?

To what does the color of each line in a spectrum correspond?

When alpha particles pass through a thin, gold foil, and almost all of them are not deflected at all, what does that indicate about the make-up of matter?

Which group of elements is called the d-block elements?

How many electrons are in atoms of Co?

The atomic mass number is indicated by what letter?

When an element has Z=10 and 10 neutrons, what element and isotope are present?

The Heisenberg Uncertainty Principle relates what two physical phenomena associated with an electron?

The element Fe, as an isotope iron-56, contains how many neutrons?

The isotope of osmium with the symbol ${ }_{75}^{190} \mathrm{~Os}$ has how many protons?

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

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3?

How is the full electron configuration of zinc represented?

How much carbon dioxide is needed to react with 4.0 g of sodium hydroxide to produce 8.4 g of sodium hydrogen carbonate as a product?

According to Leucippus, what existed in spaces where there were no atoms?

To what two variables is the speed of light equal?

A material uniformly containing 30 protons and 36 neutrons is what isotope and element?

The shape of the electron orbital changes as what else about the electron changes?

Where besides water are the isotopes of oxygen studied, when looking at the ancient Earth?

Light with a wavelength of 1.5 × 102 m has what frequency?

Lead from gunshot residue is detected by measuring emitted light that corresponds to what wavelength?

Bromine is mostly two isotopes, neither of which is bromine-80. Which is the predominant one?

To what does the color of each line in a spectrum correspond?

When alpha particles pass through a thin, gold foil, and almost all of them are not deflected at all, what does that indicate about the make-up of matter?

Which group of elements is called the d-block elements?

How many electrons are in atoms of Co?

The atomic mass number is indicated by what letter?

When an element has Z=10 and 10 neutrons, what element and isotope are present?

The Heisenberg Uncertainty Principle relates what two physical phenomena associated with an electron?

The element Fe, as an isotope iron-56, contains how many neutrons?

The isotope of osmium with the symbol 75190 Os{ }_{75}^{190} \mathrm{~Os}75190​ Os has how many protons?

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

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³?

Light with a wavelength of 1.5 × 10² m has what frequency?

The isotope of osmium with the symbol ${ }_{75}^{190} \mathrm{~Os}$ has how many protons?