Question 1

Which of the following is the correct electron-dot symbol for carbon?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)    C

Question 2

The elements sodium,magnesium,and silicon ________.

Accepted Answer

A) are isotopes of each other 
B) are in the same period of elements 
C) have the same number of neutrons 
D) are in the same group 
E) have the same mass number 
A) are isotopes of each other 
B) are in the same period of elements 
C) have the same number of neutrons 
D) are in the same group 
E) have the same mass number B

Question 3

The mass number is equal to the number of electrons.

Accepted Answer

A) True 
 B)False  False

Question 4

The elements lithium,sodium,and potassium ________.

Accepted Answer

A) are isotopes of each other 
B) are in the same period of elements 
C) have the same number of neutrons 
D) are in the same group 
E) have the same mass number 
A) are isotopes of each other 
B) are in the same period of elements 
C) have the same number of neutrons 
D) are in the same group 
E) have the same mass number

Question 5

Which of the following descriptions of a subatomic particle is correct?

Accepted Answer

A) A proton has a positive charge and a mass of approximately 1 amu. 
B) An electron has a negative charge and a mass of approximately 1 amu. 
C) A neutron has no charge and its mass is negligible. 
D) A proton has a positive charge and a negligible mass. 
E) A neutron has a positive charge and a mass of approximately 1 amu. 
A) A proton has a positive charge and a mass of approximately 1 amu. 
B) An electron has a negative charge and a mass of approximately 1 amu. 
C) A neutron has no charge and its mass is negligible. 
D) A proton has a positive charge and a negligible mass. 
E) A neutron has a positive charge and a mass of approximately 1 amu.

Question 6

The mass number of an atom can be calculated from ________.

Accepted Answer

A) the number of electrons 
B) the number of protons plus neutrons 
C) the number of protons 
D) the number of electrons plus protons 
E) the number of neutrons 
A) the number of electrons 
B) the number of protons plus neutrons 
C) the number of protons 
D) the number of electrons plus protons 
E) the number of neutrons

Question 7

The number of valence electrons found in an atom of a Group A element is equal to ________.

Accepted Answer

A) its atomic number 
B) its mass number 
C) its group number 
D) eight 
E) eight minus the group number 
A) its atomic number 
B) its mass number 
C) its group number 
D) eight 
E) eight minus the group number

Question 8

Metallic character increases going down a group.

Accepted Answer

A) True 
 B)False

Question 9

The Group 8A (18)elements ________.

Accepted Answer

A) are unreactive and are rarely found in combination with other elements 
B) are good conductors of electricity 
C) melt at high temperatures 
D) are liquids at room temperature 
E) react vigorously with water 
A) are unreactive and are rarely found in combination with other elements 
B) are good conductors of electricity 
C) melt at high temperatures 
D) are liquids at room temperature 
E) react vigorously with water

Question 10

Consider a neutral atom with 30 protons and 34 neutrons.The atomic number of the element is ________.

Accepted Answer

A) 30 
B) 32 
C) 34 
D) 64 
E) 94 
A) 30 
B) 32 
C) 34 
D) 64 
E) 94

Question 11

The electron arrangement of any particular atom shows ________.

Accepted Answer

A) the number of isotopes possible 
B) a description of the shape of each electron energy level 
C) the number of electrons in each energy level 
D) a diagram of an atomic nucleus 
E) the maximum number of electrons each energy level can hold 
A) the number of isotopes possible 
B) a description of the shape of each electron energy level 
C) the number of electrons in each energy level 
D) a diagram of an atomic nucleus 
E) the maximum number of electrons each energy level can hold

Question 12

The number of dots in the electron dot symbol of nitrogen is ________.

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 13

The proton is 2000 times the mass of the neutron.

Accepted Answer

A) True 
 B)False

Question 14

What element has the electron arrangement 2,8,4?

Accepted Answer

A) carbon 
B) oxygen 
C) sulfur 
D) iron 
E) silicon 
A) carbon 
B) oxygen 
C) sulfur 
D) iron 
E) silicon

Question 15

Mercury is a metal.

Accepted Answer

A) True 
 B)False

Question 16

Chromium is a metal.

Accepted Answer

A) True 
 B)False

Question 17

Isotopes are atoms of the same element that have ________.

Accepted Answer

A) different atomic numbers 
B) the same atomic numbers but different numbers of protons 
C) the same atomic numbers but different numbers of electrons 
D) the same atomic number but different numbers of neutrons 
E) the same atomic mass but different numbers of protons 
A) different atomic numbers 
B) the same atomic numbers but different numbers of protons 
C) the same atomic numbers but different numbers of electrons 
D) the same atomic number but different numbers of neutrons 
E) the same atomic mass but different numbers of protons

Question 18

Write the symbol from the element name.
-The symbol for lead is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Question 19

Identify the metalloid in the following list.

Accepted Answer

A) sulfur 
B) fluorine 
C) silver 
D) copper 
E) germanium 
A) sulfur 
B) fluorine 
C) silver 
D) copper 
E) germanium

Question 20

Write the symbol from the element name.
-The symbol for copper is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Which of the following is the correct electron-dot symbol for carbon?

The elements sodium,magnesium,and silicon ________.

The mass number is equal to the number of electrons.

The elements lithium,sodium,and potassium ________.

Which of the following descriptions of a subatomic particle is correct?

The mass number of an atom can be calculated from ________.

The number of valence electrons found in an atom of a Group A element is equal to ________.

Metallic character increases going down a group.

The Group 8A (18)elements ________.

Consider a neutral atom with 30 protons and 34 neutrons.The atomic number of the element is ________.

The electron arrangement of any particular atom shows ________.

The number of dots in the electron dot symbol of nitrogen is ________.

The proton is 2000 times the mass of the neutron.

What element has the electron arrangement 2,8,4?

Mercury is a metal.

Chromium is a metal.

Isotopes are atoms of the same element that have ________.

Write the symbol from the element name. -The symbol for lead is ________.

Identify the metalloid in the following list.

Write the symbol from the element name. -The symbol for copper is ________.

Chemistry in Our Lives

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Matter and Energy

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

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Acids and Bases and Equilibrium

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, Esters, Amines, and Amides

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Exam 4: Atoms and Elements

Which of the following is the correct electron-dot symbol for carbon?

The elements sodium,magnesium,and silicon ________.

The mass number is equal to the number of electrons.

The elements lithium,sodium,and potassium ________.

Which of the following descriptions of a subatomic particle is correct?

The mass number of an atom can be calculated from ________.

The number of valence electrons found in an atom of a Group A element is equal to ________.

Metallic character increases going down a group.

The Group 8A (18)elements ________.

Consider a neutral atom with 30 protons and 34 neutrons.The atomic number of the element is ________.

The electron arrangement of any particular atom shows ________.

The number of dots in the electron dot symbol of nitrogen is ________.

The proton is 2000 times the mass of the neutron.

What element has the electron arrangement 2,8,4?

Mercury is a metal.

Chromium is a metal.

Isotopes are atoms of the same element that have ________.

Write the symbol from the element name. -The symbol for lead is ________.

Identify the metalloid in the following list.

Write the symbol from the element name. -The symbol for copper is ________.

Chemistry in Our Lives

Chemistry and Measurement

Matter and Energy

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

Gases

Solutions

Acids and Bases and Equilibrium

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, Esters, Amines, and Amides

Lipids

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Metabolic Pathways and Energy Production

Filters