Question 1

A compound is made up of two or more elements.

Accepted Answer

A) True 
 B)False

Question 2

What is the full electron configuration for nitrogen?

Accepted Answer

A) 1s2 2s2 2p5 
B) 1s2 2s2 2p6 3s2 
C) 1s2 2s2 2p4 3s2 
D) 1s2 2s2 2p6 
A) 1s2 2s2 2p5 
B) 1s2 2s2 2p6 3s2 
C) 1s2 2s2 2p4 3s2 
D) 1s2 2s2 2p6

Question 3

How many protons are in zinc-65?

Accepted Answer

A) 33 
B) 30 
C) 36 
D) 66 
A) 33 
B) 30 
C) 36 
D) 66

Question 4

An electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 represents which element?

Accepted Answer

A) Mg 
B) Ca 
C) Sr 
D) None; the configuration is incorrect for any element. 
A) Mg 
B) Ca 
C) Sr 
D) None; the configuration is incorrect for any element.

Question 5

What isotope has 2 neutrons and 2 protons?

Accepted Answer

A)  ${ }_{4}^{2} \mathrm{Be}$ 
B)  ${ }_{2}^{4} \mathrm{Be}$ 
C)  ${ }_{4}^{2} \mathrm{He}$ 
D)  ${ }_{2}^{4} \mathrm{He}$ 
A)  ${ }_{4}^{2} \mathrm{Be}$ 
B)  ${ }_{2}^{4} \mathrm{Be}$ 
C)  ${ }_{4}^{2} \mathrm{He}$ 
D)  ${ }_{2}^{4} \mathrm{He}$

Question 6

Why is carbon dioxide in the atmosphere a greenhouse gas?

Accepted Answer

A) It prevents energy and heat from the sun from entering the Earth's atmosphere. 
B) It permits too much energy to enter the Earth's atmosphere. 
C) It allows energy to escape the atmosphere. 
D) It absorbs and traps energy in the Earth's atmosphere. 
A) It prevents energy and heat from the sun from entering the Earth's atmosphere. 
B) It permits too much energy to enter the Earth's atmosphere. 
C) It allows energy to escape the atmosphere. 
D) It absorbs and traps energy in the Earth's atmosphere.

Question 7

The speed of light is equal to the product of what two factors that are related to spectral emissions?

Accepted Answer

A) Periodicity and sound 
B) Sound and wavelength 
C) Frequency and sound 
D) Frequency and wavelength 
A) Periodicity and sound 
B) Sound and wavelength 
C) Frequency and sound 
D) Frequency and wavelength

Question 8

How many neutrons does uranium-235 contain?

Accepted Answer

A) 92 
B) 140 
C) 143 
D) 235 
A) 92 
B) 140 
C) 143 
D) 235

Question 9

One postulate of Dalton's atomic theory defines what matter is made of. What is it?

Accepted Answer

All matter is made o

Question 10

How many protons are in ${ }_{23}^{11} \mathrm{~V}$ ?

Accepted Answer

A) 74 
B) 28 
C) 51 
D) 23 
A) 74 
B) 28 
C) 51 
D) 23

Question 11

The term "atom" comes from an ancient word "atomos," which comes from what ancient society?

Accepted Answer

A) Persia 
B) Rome 
C) Phoenicia 
D) Greece 
A) Persia 
B) Rome 
C) Phoenicia 
D) Greece

Question 12

What is a photon?

Accepted Answer

A) Excess energy absorbed by a proton 
B) Excess energy emitted from a neutron 
C) Excess energy absorbed by an electron 
D) Excess energy emitted from an electron 
A) Excess energy absorbed by a proton 
B) Excess energy emitted from a neutron 
C) Excess energy absorbed by an electron 
D) Excess energy emitted from an electron

Question 13

Boron has how many protons?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 14

When a body is cremated, in what form is the carbon driven off?

Accepted Answer

The answer of When a body is cremated, in what...

Question 15

What did the ancient, Greek philosophers not have to prove their theories of continuous matter or atomic matter?

Accepted Answer

A) Rational arguments 
B) The actual, observable properties of matter 
C) Any experimental evidence beyond what they could see 
D) A theistic or atheistic model from which to draw conclusions 
A) Rational arguments 
B) The actual, observable properties of matter 
C) Any experimental evidence beyond what they could see 
D) A theistic or atheistic model from which to draw conclusions

Question 16

Neutral atoms of potassium all have how many electrons?

Accepted Answer

A) 19 
B) 20 
C) 39 
D) 40 
A) 19 
B) 20 
C) 39 
D) 40

Question 17

How does the amount of 16O change in the oceans when glaciers melt?

Accepted Answer

Question 18

How are two samples of an element referred to when they possess differing numbers of neutrons?

Accepted Answer

A) As isotopes 
B) As allotropes 
C) As ions 
D) None of the above. They are different elements if the samples have differing numbers of neutrons. 
A) As isotopes 
B) As allotropes 
C) As ions 
D) None of the above. They are different elements if the samples have differing numbers of neutrons.

Question 19

According to Dalton's Atomic Theory, how do atoms combine?

Accepted Answer

A) Randomly 
B) With high energy 
C) In any ratio 
D) In whole number ratios 
A) Randomly 
B) With high energy 
C) In any ratio 
D) In whole number ratios

Question 20

${ }_{20}^{40} \mathrm{Ca}$ contains how many neutrons?

Accepted Answer

A) 20 
B) 40 
C) 60 
D) None of the above. 
A) 20 
B) 40 
C) 60 
D) None of the above.

A compound is made up of two or more elements.

What is the full electron configuration for nitrogen?

How many protons are in zinc-65?

An electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² represents which element?

What isotope has 2 neutrons and 2 protons?

Why is carbon dioxide in the atmosphere a greenhouse gas?

The speed of light is equal to the product of what two factors that are related to spectral emissions?

How many neutrons does uranium-235 contain?

One postulate of Dalton's atomic theory defines what matter is made of. What is it?

How many protons are in ${ }_{23}^{11} \mathrm{~V}$ ?

The term "atom" comes from an ancient word "atomos," which comes from what ancient society?

What is a photon?

Boron has how many protons?

When a body is cremated, in what form is the carbon driven off?

What did the ancient, Greek philosophers not have to prove their theories of continuous matter or atomic matter?

Neutral atoms of potassium all have how many electrons?

How does the amount of ¹⁶O change in the oceans when glaciers melt?

How are two samples of an element referred to when they possess differing numbers of neutrons?

According to Dalton's Atomic Theory, how do atoms combine?

${ }_{20}^{40} \mathrm{Ca}$ contains how many neutrons?

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

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Exam 3: Understanding Atoms

A compound is made up of two or more elements.

What is the full electron configuration for nitrogen?

How many protons are in zinc-65?

An electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 represents which element?

What isotope has 2 neutrons and 2 protons?

Why is carbon dioxide in the atmosphere a greenhouse gas?

The speed of light is equal to the product of what two factors that are related to spectral emissions?

How many neutrons does uranium-235 contain?

One postulate of Dalton's atomic theory defines what matter is made of. What is it?

How many protons are in 2311 V{ }_{23}^{11} \mathrm{~V}2311​ V ?

The term "atom" comes from an ancient word "atomos," which comes from what ancient society?

What is a photon?

Boron has how many protons?

When a body is cremated, in what form is the carbon driven off?

What did the ancient, Greek philosophers not have to prove their theories of continuous matter or atomic matter?

Neutral atoms of potassium all have how many electrons?

How does the amount of 16O change in the oceans when glaciers melt?

How are two samples of an element referred to when they possess differing numbers of neutrons?

According to Dalton's Atomic Theory, how do atoms combine?

2040Ca{ }_{20}^{40} \mathrm{Ca}2040​Ca contains how many neutrons?

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

An electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² represents which element?

How many protons are in ${ }_{23}^{11} \mathrm{~V}$ ?

How does the amount of ¹⁶O change in the oceans when glaciers melt?

${ }_{20}^{40} \mathrm{Ca}$ contains how many neutrons?