Question 1

Main-group elements tend to form ions that have the same number of total electrons as the nearest halogen.

Accepted Answer

A) True 
 B)False  False

Question 2

All of the following statements about different elements are true EXCEPT:

Accepted Answer

A) Barium is an alkaline earth metal. 
B) Manganese is a transition metal. 
C) Sulfur is considered a metalloid. 
D) Krypton is one of the noble gases. 
E) Iodine is a halogen. 
A) Barium is an alkaline earth metal. 
B) Manganese is a transition metal. 
C) Sulfur is considered a metalloid. 
D) Krypton is one of the noble gases. 
E) Iodine is a halogen. C

Question 3

Aluminum is one of the most commonly used metalloids.

Accepted Answer

A) True 
 B)False  False

Question 4

The smell of the ocean is caused by atoms.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following statements about the nature of electrical charge is FALSE?

Accepted Answer

A) Electrical charge is a fundamental property of protons and electrons. 
B) Positive and negative electrical charges attract each other. 
C) Positive-positive or negative-negative charges repel each other. 
D) Positive and negative charges cancel each other so that a proton and electron,when paired,are charge neutral. 
E) All of the above statements are true. 
A) Electrical charge is a fundamental property of protons and electrons. 
B) Positive and negative electrical charges attract each other. 
C) Positive-positive or negative-negative charges repel each other. 
D) Positive and negative charges cancel each other so that a proton and electron,when paired,are charge neutral. 
E) All of the above statements are true.

Question 6

An atom that has the same number of neutrons as   Ba is:

Accepted Answer

A)    Cs 
B)    Ba 
C)    La 
D)    Xe 
E) none of the above 
A)    Cs 
B)    Ba 
C)    La 
D)    Xe 
E) none of the above

Question 7

Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?

Accepted Answer

A) Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus. 
B) Electrical charge is a fundamental property of protons and electrons in which like charges repel and opposite charges attract. 
C) Most of the volume of the atom is empty space occupied by tiny,negatively charged electrons. 
D) There are as many electrons outside the nucleus as there are protons inside the nucleus in a neutral atom. 
E) All of the above statements are consistent. 
A) Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus. 
B) Electrical charge is a fundamental property of protons and electrons in which like charges repel and opposite charges attract. 
C) Most of the volume of the atom is empty space occupied by tiny,negatively charged electrons. 
D) There are as many electrons outside the nucleus as there are protons inside the nucleus in a neutral atom. 
E) All of the above statements are consistent.

Question 8

A fictional element has two isotopes,each making up 50% of the population.Isotope 1 has a mass of 80.0 amu,Isotope 2 has a mass of 85.0 amu.Calculate the atomic mass of the fictional element.

Accepted Answer

A) 82.5 amu 
B) 42.5 amu 
C) 40 amu 
D) 165 amu 
E) none of the above 
A) 82.5 amu 
B) 42.5 amu 
C) 40 amu 
D) 165 amu 
E) none of the above

Question 9

J.J.Thomson discovered the existence of protons.

Accepted Answer

A) True 
 B)False

Question 10

Which statement below accurately describes the contributions of Dalton?

Accepted Answer

A) ancient Greek philosopher who proposed that matter was continuous 
B) created the modern periodic table 
C) proposed the modern Atomic Theory 
D) discovered the existence of electrons 
E) none of the above 
A) ancient Greek philosopher who proposed that matter was continuous 
B) created the modern periodic table 
C) proposed the modern Atomic Theory 
D) discovered the existence of electrons 
E) none of the above

Question 11

All elements have three or more naturally occurring isotopes.

Accepted Answer

A) True 
 B)False

Question 12

The charges on electrons and neutrons cancel each other to give neutral atoms.

Accepted Answer

A) True 
 B)False

Question 13

How many electrons are in Br-?

Accepted Answer

A) 4 
B) 7 
C) 34 
D) 36 
E) none of the above 
A) 4 
B) 7 
C) 34 
D) 36 
E) none of the above

Question 14

Which one of the following is a main-group element?

Accepted Answer

A) Ce 
B) Co 
C) Cu 
D) Cs 
E) none of the above 
A) Ce 
B) Co 
C) Cu 
D) Cs 
E) none of the above

Question 15

A specific isotope of an element is known to have 15 protons and 16 neutrons.Which symbol would properly represent this isotope?

Accepted Answer

A)    Ga 
B)    P 
C)    X 
D)    S 
E) none of the above 
A)    Ga 
B)    P 
C)    X 
D)    S 
E) none of the above

Question 16

John Dalton was the first person recorded as thinking that matter was ultimately composed of atoms.

Accepted Answer

A) True 
 B)False

Question 17

The only known atom that does not contain a neutron is one of the isotopes of hydrogen.The mass number,symbolized as "A" in the text,of this hydrogen isotope must be:

Accepted Answer

A) 1.01 
B) 0 
C) 1 
D) 2 
E) none of the above 
A) 1.01 
B) 0 
C) 1 
D) 2 
E) none of the above

Question 18

The gold foil experiment proved that large regions of the atoms consisted of empty space.

Accepted Answer

A) True 
 B)False

Question 19

John Dalton formalized an atomic theory that gained acceptance in the early 19th century.

Accepted Answer

A) True 
 B)False

Question 20

What is the atomic symbol for silver?

Accepted Answer

A) S 
B) Ag 
C) Au 
D) Si 
E) none of the above 
A) S 
B) Ag 
C) Au 
D) Si 
E) none of the above

Main-group elements tend to form ions that have the same number of total electrons as the nearest halogen.

All of the following statements about different elements are true EXCEPT:

Aluminum is one of the most commonly used metalloids.

The smell of the ocean is caused by atoms.

Which of the following statements about the nature of electrical charge is FALSE?

An atom that has the same number of neutrons as Ba is:

Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?

A fictional element has two isotopes,each making up 50% of the population.Isotope 1 has a mass of 80.0 amu,Isotope 2 has a mass of 85.0 amu.Calculate the atomic mass of the fictional element.

J.J.Thomson discovered the existence of protons.

Which statement below accurately describes the contributions of Dalton?

All elements have three or more naturally occurring isotopes.

The charges on electrons and neutrons cancel each other to give neutral atoms.

How many electrons are in Br^-?

Which one of the following is a main-group element?

A specific isotope of an element is known to have 15 protons and 16 neutrons.Which symbol would properly represent this isotope?

John Dalton was the first person recorded as thinking that matter was ultimately composed of atoms.

The only known atom that does not contain a neutron is one of the isotopes of hydrogen.The mass number,symbolized as "A" in the text,of this hydrogen isotope must be:

The gold foil experiment proved that large regions of the atoms consisted of empty space.

John Dalton formalized an atomic theory that gained acceptance in the early 19th century.

What is the atomic symbol for silver?

The Chemical World

Measurement and Problem Solving

Matter and Energy

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

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Exam 4: Atoms and Elements

Main-group elements tend to form ions that have the same number of total electrons as the nearest halogen.

All of the following statements about different elements are true EXCEPT:

Aluminum is one of the most commonly used metalloids.

The smell of the ocean is caused by atoms.

Which of the following statements about the nature of electrical charge is FALSE?

An atom that has the same number of neutrons as Ba is:

Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?

A fictional element has two isotopes,each making up 50% of the population.Isotope 1 has a mass of 80.0 amu,Isotope 2 has a mass of 85.0 amu.Calculate the atomic mass of the fictional element.

J.J.Thomson discovered the existence of protons.

Which statement below accurately describes the contributions of Dalton?

All elements have three or more naturally occurring isotopes.

The charges on electrons and neutrons cancel each other to give neutral atoms.

How many electrons are in Br-?

Which one of the following is a main-group element?

A specific isotope of an element is known to have 15 protons and 16 neutrons.Which symbol would properly represent this isotope?

John Dalton was the first person recorded as thinking that matter was ultimately composed of atoms.

The only known atom that does not contain a neutron is one of the isotopes of hydrogen.The mass number,symbolized as "A" in the text,of this hydrogen isotope must be:

The gold foil experiment proved that large regions of the atoms consisted of empty space.

John Dalton formalized an atomic theory that gained acceptance in the early 19th century.

What is the atomic symbol for silver?

The Chemical World

Measurement and Problem Solving

Matter and Energy

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

How many electrons are in Br^-?