Question 1

Lithium occurs naturally as 6Li and 7Li .Which isotope is more abundant? (Hint: Refer to the Periodic Table. )

Accepted Answer

A) lithium-3 
B) lithium-4 
C) lithium-6 
D) lithium-7 
E) none of the above 
A) lithium-3 
B) lithium-4 
C) lithium-6 
D) lithium-7 
E) none of the above D

Question 2

How many orbitals are in the 4d subshell?

Accepted Answer

A) 1 
B) 3 
C) 4 
D) 5 
E) none of the above 
A) 1 
B) 3 
C) 4 
D) 5 
E) none of the above D

Question 3

Which of the following refers to a molecule of water in which the hydrogen atoms contain a neutron?

Accepted Answer

A) D2O 
B) deuterium oxide 
C) heavy water 
D) all of the above 
E) none of the above 
A) D2O 
B) deuterium oxide 
C) heavy water 
D) all of the above 
E) none of the above D

Question 4

Which of the following subatomic particles are found inside the nucleus?

Accepted Answer

A) electron and neutron 
B) neutron and proton 
C) proton and electron 
D) all of the above 
E) none of the above 
A) electron and neutron 
B) neutron and proton 
C) proton and electron 
D) all of the above 
E) none of the above

Question 5

What is the maximum number of electrons that can occupy the 4th principal energy level?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 8 
E) none of the above 
A) 1 
B) 2 
C) 4 
D) 8 
E) none of the above

Question 6

What is the term for a symbolic method of expressing the composition of an atomic nucleus?

Accepted Answer

A) atomic notation 
B) atomic number 
C) atomic mass 
D) mass number 
E) none of the above 
A) atomic notation 
B) atomic number 
C) atomic mass 
D) mass number 
E) none of the above

Question 7

According to the Thomson model of the atom,what is the simplest negative particle in an atom?

Accepted Answer

A) alpha 
B) electron 
C) neutron 
D) proton 
E) none of the above 
A) alpha 
B) electron 
C) neutron 
D) proton 
E) none of the above

Question 8

Which of the following is an example of a quantized change in energy?

Accepted Answer

A) a ball rolling up a ramp 
B) a ball rolling down a ramp 
C) a ball rolling down a flight of stairs 
D) a ball rolling across a playground 
E) none of the above 
A) a ball rolling up a ramp 
B) a ball rolling down a ramp 
C) a ball rolling down a flight of stairs 
D) a ball rolling across a playground 
E) none of the above

Question 9

Which electron sublevel follows the 3d sublevel according to increasing energy?

Accepted Answer

A) 3s 
B) 3p 
C) 4s 
D) 4p 
E) 4d 
A) 3s 
B) 3p 
C) 4s 
D) 4p 
E) 4d

Question 10

What do the raisins represent in the raisin pudding model of the atom?

Accepted Answer

A) electrons 
B) neutrons 
C) protons 
D) nuclei 
E) none of the above 
A) electrons 
B) neutrons 
C) protons 
D) nuclei 
E) none of the above

Question 11

How many neutrons are in the nucleus of an atom of copper-65?

Accepted Answer

A) 29 
B) 36 
C) 65 
D) 94 
E) none of the above 
A) 29 
B) 36 
C) 65 
D) 94 
E) none of the above

Question 12

According to the Thomson model,what is the simplest positive particle in an atom?

Accepted Answer

A) alpha 
B) electron 
C) neutron 
D) proton 
E) none of the above 
A) alpha 
B) electron 
C) neutron 
D) proton 
E) none of the above

Question 13

Which of the following orbitals has a "dumbbell" shape?

Accepted Answer

A) 4s 
B) 4px 
C) 4dxy 
D) all of the above 
E) none of the above 
A) 4s 
B) 4px 
C) 4dxy 
D) all of the above 
E) none of the above

Question 14

What type of radiation is emitted when an electron in a hydrogen atom drops from energy level 5 to 1?

Accepted Answer

A) infrared 
B) visible 
C) ultraviolet 
D) X ray 
E) gamma ray 
A) infrared 
B) visible 
C) ultraviolet 
D) X ray 
E) gamma ray

Question 15

What is the positively charged subatomic particle having an approximate mass of 1 amu?

Accepted Answer

A) electron 
B) neutron 
C) proton 
D) quark 
E) none of the above 
A) electron 
B) neutron 
C) proton 
D) quark 
E) none of the above

Question 16

Which of the following wavelengths has the lowest velocity?

Accepted Answer

A) 440 nm 
B) 470 nm 
C) 540 nm 
D) 650 nm 
E) All wavelengths have the same velocity. 
A) 440 nm 
B) 470 nm 
C) 540 nm 
D) 650 nm 
E) All wavelengths have the same velocity.

Question 17

According to the Thomson model,what is the relative charge on a proton?

Accepted Answer

A) -1 
B) +1 
C) -2 
D) +2 
E) none of the above 
A) -1 
B) +1 
C) -2 
D) +2 
E) none of the above

Question 18

How many neutrons are in the nucleus of an atom of   Sn?

Accepted Answer

A) 50 
B) 68 
C) 118 
D) 168 
E) none of the above 
A) 50 
B) 68 
C) 118 
D) 168 
E) none of the above

Question 19

An atom can be described by the analogy "like a marble in the Dallas Cowboys Stadium." If the stadium represents an atom,what does the marble represent?

Accepted Answer

A) marble 
B) electron 
C) neutron 
D) nucleus 
E) proton 
A) marble 
B) electron 
C) neutron 
D) nucleus 
E) proton

Question 20

How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 4 to 2?

Accepted Answer

A) 1 
B) 10 
C) 20 
D) 40 
E) none of the above 
A) 1 
B) 10 
C) 20 
D) 40 
E) none of the above

Exam 4: Models of the Atom

Lithium occurs naturally as 6Li and 7Li .Which isotope is more abundant? (Hint: Refer to the Periodic Table. )

How many orbitals are in the 4d subshell?

Which of the following refers to a molecule of water in which the hydrogen atoms contain a neutron?

Which of the following subatomic particles are found inside the nucleus?

What is the maximum number of electrons that can occupy the 4th principal energy level?

What is the term for a symbolic method of expressing the composition of an atomic nucleus?

According to the Thomson model of the atom,what is the simplest negative particle in an atom?

Which of the following is an example of a quantized change in energy?

Which electron sublevel follows the 3d sublevel according to increasing energy?

What do the raisins represent in the raisin pudding model of the atom?

How many neutrons are in the nucleus of an atom of copper-65?

According to the Thomson model,what is the simplest positive particle in an atom?

Which of the following orbitals has a "dumbbell" shape?

What type of radiation is emitted when an electron in a hydrogen atom drops from energy level 5 to 1?

What is the positively charged subatomic particle having an approximate mass of 1 amu?

Which of the following wavelengths has the lowest velocity?

According to the Thomson model,what is the relative charge on a proton?

How many neutrons are in the nucleus of an atom of Sn?

An atom can be described by the analogy "like a marble in the Dallas Cowboys Stadium." If the stadium represents an atom,what does the marble represent?

How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 4 to 2?

Introduction to Chemistry

The Metric System

Matter and Energy

The Periodic Table

Language of Chemistry

Chemical Reactions

The Mole Concept

Chemical Equation Calculations

Gases

Liquids and Solids

Chemical Bonding

Solutions

Acids and Bases

Advanced Problem Solving

Chemical Equilibrium

Oxidation and Reduction

Nuclear Chemistry

Organic Chemistry

Biochemistry

Interlude: Prerequisite Science Skills

Filters