Question 1

What sub-atomic particle does the letter Z denote?

Accepted Answer

The answer of What sub-atomic particle does the letter Z...

Question 2

The observation that all samples of tin always appear to be a metal is an example of what idea within Dalton's atomic theory?

Accepted Answer

A) All matter is made up of tiny particles called atoms. 
B) All atoms of a given element are identical. 
C) Atoms combine in simple, whole number ratios. 
D) Atoms are neither created nor destroyed in a chemical reaction. 
A) All matter is made up of tiny particles called atoms. 
B) All atoms of a given element are identical. 
C) Atoms combine in simple, whole number ratios. 
D) Atoms are neither created nor destroyed in a chemical reaction.

Question 3

Which isotope of iron is the predominant one?

Accepted Answer

A) 55 
B) 56 
C) 57 
D) 58 
A) 55 
B) 56 
C) 57 
D) 58

Question 4

What is the full electron configuration for arsenic?

Accepted Answer

A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2 
B) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 
C) 1s2 2s2 2p6 3s2 3p6 4s2 3d11 4p2 
D) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 
A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2 
B) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 
C) 1s2 2s2 2p6 3s2 3p6 4s2 3d11 4p2 
D) 1s2 2s2 2p6 3s2 3p6 4s2 3d10

Question 5

What did Lavoisier find was always produced when he heated mercury (II) oxide in a sealed system?

Accepted Answer

A) Oxygen 
B) Oxides 
C) Mercury 
D) Mercury and oxygen 
A) Oxygen 
B) Oxides 
C) Mercury 
D) Mercury and oxygen

Question 6

Helium has which of the following as a full electron configuration?

Accepted Answer

A) 1s2 2s1 2p1 
B) 1s2 1s2 
C) 1s1 2s3 
D) 1s2 2s2 
A) 1s2 2s1 2p1 
B) 1s2 1s2 
C) 1s1 2s3 
D) 1s2 2s2

Question 7

Which two of the Greek philosopher scientists postulated the theory of atoms?

Accepted Answer

Leucippus

Question 8

The continuous model of matter, postulated by Aristotle, believed in what as the smallest material?

Accepted Answer

A) Nothing was; matter should be able to be divided over and over. 
B) The atom, where matter can no longer be divided. 
C) The vacuum, where matter stopped existing. 
D) The proton, the smallest piece of matter. 
A) Nothing was; matter should be able to be divided over and over. 
B) The atom, where matter can no longer be divided. 
C) The vacuum, where matter stopped existing. 
D) The proton, the smallest piece of matter.

Question 9

What is the frequency of light with a wavelength of 9 × 104 m?

Accepted Answer

A) 0.33 × 104 /s 
B) 3.0 × 104 /s 
C) 0.33 × 108 /s 
D) 3.0 × 108 /s 
A) 0.33 × 104 /s 
B) 3.0 × 104 /s 
C) 0.33 × 108 /s 
D) 3.0 × 108 /s

Question 10

When an element has Z=31 and 39 neutrons, what element and isotope is it?

Accepted Answer

A)  ${ }_{70}^{31} \mathrm{Ga}$ 
B)  ${ }_{70}^{31} \mathrm{Yb}$ 
C)  ${ }_{31}^{70} \mathrm{Ga}$ 
D)  ${ }_{31}^{70} \mathrm{Yb}$ 
A)  ${ }_{70}^{31} \mathrm{Ga}$ 
B)  ${ }_{70}^{31} \mathrm{Yb}$ 
C)  ${ }_{31}^{70} \mathrm{Ga}$ 
D)  ${ }_{31}^{70} \mathrm{Yb}$

Question 11

What is the wavelength of light with a frequency of 1.5 × 106 /s?

Accepted Answer

A) 0.5 × 102 m 
B) 2.0 × 102 m 
C) 2.0 × 1014 m 
D) 0.5 × 1014 m 
A) 0.5 × 102 m 
B) 2.0 × 102 m 
C) 2.0 × 1014 m 
D) 0.5 × 1014 m

Question 12

The isotope of oxygen with the symbol ${ }_{8}^{16} \mathrm{O}$ has how many electrons?

Accepted Answer

A) 8 
B) 16 
C) 24 
D) 9 
A) 8 
B) 16 
C) 24 
D) 9

Question 13

When Lavoisier heated mercury (II) oxide, what were his products?

Accepted Answer

A) Mercury gas and oxygen liquid 
B) Mercury oxide and oxygen gas 
C) Mercury gas and oxygen gas 
D) Mercury liquid and oxygen gas 
A) Mercury gas and oxygen liquid 
B) Mercury oxide and oxygen gas 
C) Mercury gas and oxygen gas 
D) Mercury liquid and oxygen gas

Question 14

The isotope of iron with the symbol ${ }_{26}^{56} \mathrm{Fe}$ has how many electrons?

Accepted Answer

A) 26 
B) 25 
C) 56 
D) 55 
A) 26 
B) 25 
C) 56 
D) 55

Question 15

What colors of light appear in a continuous spectrum?

Accepted Answer

A) Red wavelengths 
B) Blue wavelengths 
C) All wavelengths 
D) Orange-yellow wavelengths 
A) Red wavelengths 
B) Blue wavelengths 
C) All wavelengths 
D) Orange-yellow wavelengths

Question 16

Of the following, who is the only modern scientist?

Accepted Answer

A) Socrates 
B) Thomaford 
C) Democritus 
D) Dalton 
A) Socrates 
B) Thomaford 
C) Democritus 
D) Dalton

Question 17

What is the mass of the missing material in the following equation?
_____ g carbonic acid → 22.0 g CO2 + 9.0 g H2O

Accepted Answer

A) 13.0 g 
B) 29.0 g 
C) 31.0 g 
D) 62.0 g 
A) 13.0 g 
B) 29.0 g 
C) 31.0 g 
D) 62.0 g

Question 18

The law of conservation of mass states:

Accepted Answer

A) mass is neither created nor destroyed in a chemical reaction, but merely changes state. 
B) mass is neither created nor destroyed in a chemical reaction, but merely changes form. 
C) mass is created or destroyed in a chemical reaction, while changing form. 
D) mass and energy are neither created nor destroyed in a chemical reaction, but merely changes form. 
A) mass is neither created nor destroyed in a chemical reaction, but merely changes state. 
B) mass is neither created nor destroyed in a chemical reaction, but merely changes form. 
C) mass is created or destroyed in a chemical reaction, while changing form. 
D) mass and energy are neither created nor destroyed in a chemical reaction, but merely changes form.

Question 19

How many electrons are in the isotope of germanium with the symbol ${ }_{32}^{72} \mathrm{~Ge}$ ?

Accepted Answer

A) 40 
B) 32 
C) 72 
D) 104 
A) 40 
B) 32 
C) 72 
D) 104

Question 20

The isotope of cobalt with the symbol ${ }_{27}^{59} \mathrm{Co}$ has how many neutrons?

Accepted Answer

A) 27 
B) 32 
C) 59 
D) 86 
A) 27 
B) 32 
C) 59 
D) 86

What sub-atomic particle does the letter Z denote?

The observation that all samples of tin always appear to be a metal is an example of what idea within Dalton's atomic theory?

Which isotope of iron is the predominant one?

What is the full electron configuration for arsenic?

What did Lavoisier find was always produced when he heated mercury (II) oxide in a sealed system?

Helium has which of the following as a full electron configuration?

Which two of the Greek philosopher scientists postulated the theory of atoms?

The continuous model of matter, postulated by Aristotle, believed in what as the smallest material?

What is the frequency of light with a wavelength of 9 × 10⁴ m?

When an element has Z=31 and 39 neutrons, what element and isotope is it?

What is the wavelength of light with a frequency of 1.5 × 10⁶ /s?

The isotope of oxygen with the symbol ${ }_{8}^{16} \mathrm{O}$ has how many electrons?

When Lavoisier heated mercury (II) oxide, what were his products?

The isotope of iron with the symbol ${ }_{26}^{56} \mathrm{Fe}$ has how many electrons?

What colors of light appear in a continuous spectrum?

Of the following, who is the only modern scientist?

What is the mass of the missing material in the following equation? _____ g carbonic acid → 22.0 g CO₂ + 9.0 g H₂O

The law of conservation of mass states:

How many electrons are in the isotope of germanium with the symbol ${ }_{32}^{72} \mathrm{~Ge}$ ?

The isotope of cobalt with the symbol ${ }_{27}^{59} \mathrm{Co}$ has how many neutrons?

Understanding Our World With Chemistry

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Bonding and Reactions

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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

What sub-atomic particle does the letter Z denote?

The observation that all samples of tin always appear to be a metal is an example of what idea within Dalton's atomic theory?

Which isotope of iron is the predominant one?

What is the full electron configuration for arsenic?

What did Lavoisier find was always produced when he heated mercury (II) oxide in a sealed system?

Helium has which of the following as a full electron configuration?

Which two of the Greek philosopher scientists postulated the theory of atoms?

The continuous model of matter, postulated by Aristotle, believed in what as the smallest material?

What is the frequency of light with a wavelength of 9 × 104 m?

When an element has Z=31 and 39 neutrons, what element and isotope is it?

What is the wavelength of light with a frequency of 1.5 × 106 /s?

The isotope of oxygen with the symbol 816O{ }_{8}^{16} \mathrm{O}816​O has how many electrons?

When Lavoisier heated mercury (II) oxide, what were his products?

The isotope of iron with the symbol 2656Fe{ }_{26}^{56} \mathrm{Fe}2656​Fe has how many electrons?

What colors of light appear in a continuous spectrum?

Of the following, who is the only modern scientist?

What is the mass of the missing material in the following equation? _____ g carbonic acid → 22.0 g CO2 + 9.0 g H2O

The law of conservation of mass states:

How many electrons are in the isotope of germanium with the symbol 3272 Ge{ }_{32}^{72} \mathrm{~Ge}3272​ Ge ?

The isotope of cobalt with the symbol 2759Co{ }_{27}^{59} \mathrm{Co}2759​Co has 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

What is the frequency of light with a wavelength of 9 × 10⁴ m?

What is the wavelength of light with a frequency of 1.5 × 10⁶ /s?

The isotope of oxygen with the symbol ${ }_{8}^{16} \mathrm{O}$ has how many electrons?

The isotope of iron with the symbol ${ }_{26}^{56} \mathrm{Fe}$ has how many electrons?

What is the mass of the missing material in the following equation? _____ g carbonic acid → 22.0 g CO₂ + 9.0 g H₂O

How many electrons are in the isotope of germanium with the symbol ${ }_{32}^{72} \mathrm{~Ge}$ ?

The isotope of cobalt with the symbol ${ }_{27}^{59} \mathrm{Co}$ has how many neutrons?