Question 1

Human beings use as much energy in one year as the amount of solar energy that hits the surface of the earth in

Accepted Answer

A) one hour. 
B) one day. 
C) one week. 
D) one month. 
A) one hour. 
B) one day. 
C) one week. 
D) one month.

Question 2

Elements in the same group have

Accepted Answer

A) the same atomic number. 
B) the same number of neutrons. 
C) the same number of electrons. 
D) the same number of valence electrons. 
A) the same atomic number. 
B) the same number of neutrons. 
C) the same number of electrons. 
D) the same number of valence electrons.

Question 3

William Crookes passed an electric current through a tightly sealed tube.The current generated a green beam of light (due to fluorescence as the beam struck a zinc sulfide surface)which seemed to pass from one electrode to the other.This beam was called a cathode ray because

Accepted Answer

A) it seemed to leave the anode and travel to the cathode. 
B) it seemed to leave the cathode and travel to the anode. 
C) it seemed to travel from the zinc sulfide screen to the cathode. 
D) it seemed to travel from the zinc sulfide screen to the anode. 
A) it seemed to leave the anode and travel to the cathode. 
B) it seemed to leave the cathode and travel to the anode. 
C) it seemed to travel from the zinc sulfide screen to the cathode. 
D) it seemed to travel from the zinc sulfide screen to the anode.

Question 4

Compare and contrast the three subatomic particles with respect to mass and charge.

Accepted Answer

The three subatomic particles are proton

Question 5

Nuclear physicists have discovered over 100 different particles that compose the nucleus of an atom.From a chemistry perspective,the nucleus is best described as being composed of

Accepted Answer

A) protons and neutrons packed tightly into a very small volume. 
B) protons and electrons packed tightly into a very small volume. 
C) neutrons and electrons packed tightly into a very small volume. 
D) protons, neutrons and electrons packed tightly into a very small volume. 
A) protons and neutrons packed tightly into a very small volume. 
B) protons and electrons packed tightly into a very small volume. 
C) neutrons and electrons packed tightly into a very small volume. 
D) protons, neutrons and electrons packed tightly into a very small volume.

Question 6

How many protons are there in a silver atom?

Accepted Answer

A) 16 
B) 38 
C) 47 
D) 79 
A) 16 
B) 38 
C) 47 
D) 79

Question 7

How many electrons are there in a Ca atom?

Accepted Answer

A) 20 
B) 40 
C) 21 
D) 60 
A) 20 
B) 40 
C) 21 
D) 60

Question 8

Identify the particle that is the least penetrating.

Accepted Answer

A) alpha, α 
B) beta, β 
C) gamma, γ 
D) delta, δ 
A) alpha, α 
B) beta, β 
C) gamma, γ 
D) delta, δ

Question 9

Which element is a very good conductor of electricity?

Accepted Answer

A) oxygen 
B) bromine 
C) selenium 
D) gold 
A) oxygen 
B) bromine 
C) selenium 
D) gold

Question 10

How many neutrons are in this isotope of tin?

Accepted Answer

A) 50 
B) 66 
C) 116 
D) 182 
A) 50 
B) 66 
C) 116 
D) 182

Question 11

Which is NOT true about the atomic number?

Accepted Answer

A) The atomic number of an element is the number of protons in an atom. 
B) The atomic number of an element is equal to the positive charge of an atom's nucleus. 
C) The atomic number of an element is equal to the number of electrons in a neutral atom. 
D) The atomic number of an element is equal to the number of electrons in a charged atom. 
A) The atomic number of an element is the number of protons in an atom. 
B) The atomic number of an element is equal to the positive charge of an atom's nucleus. 
C) The atomic number of an element is equal to the number of electrons in a neutral atom. 
D) The atomic number of an element is equal to the number of electrons in a charged atom.

Question 12

An element with electronic structure 1s² 2s² 2p⁴ is in which group of the periodic table?

Accepted Answer

A) II A 
B) IV A 
C) VI A 
D) VIII A 
A) II A 
B) IV A 
C) VI A 
D) VIII A

Question 13

Gamma rays will be deflected in a magnetic field.

Accepted Answer

A) True 
 B)False

Question 14

A neutral atom has the same number of

Accepted Answer

A) electrons and neutrons. 
B) electrons and nucleons. 
C) electrons and protons. 
D) neutrons and protons. 
A) electrons and neutrons. 
B) electrons and nucleons. 
C) electrons and protons. 
D) neutrons and protons.

Question 15

Which statement comparing chemical and nuclear properties of isotopes is correct?

Accepted Answer

A) Isotopes have similar chemical and nuclear properties. 
B) Isotopes have different chemical and nuclear properties. 
C) Isotopes have different chemical properties, but generally the same nuclear properties. 
D) Isotopes generally have the same chemical properties, but often different nuclear properties. 
A) Isotopes have similar chemical and nuclear properties. 
B) Isotopes have different chemical and nuclear properties. 
C) Isotopes have different chemical properties, but generally the same nuclear properties. 
D) Isotopes generally have the same chemical properties, but often different nuclear properties.

Question 16

In attempting to explain the line spectrum of hydrogen,Bohr suggested that the energy of electrons in atoms is

Accepted Answer

A) zero. 
B) infinite. 
C) continuous. 
D) quantized. 
A) zero. 
B) infinite. 
C) continuous. 
D) quantized.

Question 17

The isotope   is also called

Accepted Answer

A) phosphorus-15. 
B) phosphorus-16. 
C) phosphorus-31. 
D) phosphorus-46. 
A) phosphorus-15. 
B) phosphorus-16. 
C) phosphorus-31. 
D) phosphorus-46.

Question 18

What is the maximum number of electrons that can occupy the 2s sublevel?

Accepted Answer

A) 3 
B) 1 
C) 4 
D) 2 
A) 3 
B) 1 
C) 4 
D) 2

Question 19

An s sublevel can hold a maximum of

Accepted Answer

A) 2 electrons. 
B) 6 electrons. 
C) 10 electrons. 
D) 14 electrons. 
A) 2 electrons. 
B) 6 electrons. 
C) 10 electrons. 
D) 14 electrons.

Question 20

Which orbital will have the lowest energy?

Accepted Answer

A) 4d 
B) 4f 
C) 4p 
D) 4s 
A) 4d 
B) 4f 
C) 4p 
D) 4s

Exam 3: Atomic Structure

Human beings use as much energy in one year as the amount of solar energy that hits the surface of the earth in

Elements in the same group have

William Crookes passed an electric current through a tightly sealed tube.The current generated a green beam of light (due to fluorescence as the beam struck a zinc sulfide surface)which seemed to pass from one electrode to the other.This beam was called a cathode ray because

Compare and contrast the three subatomic particles with respect to mass and charge.

Nuclear physicists have discovered over 100 different particles that compose the nucleus of an atom.From a chemistry perspective,the nucleus is best described as being composed of

How many protons are there in a silver atom?

How many electrons are there in a Ca atom?

Identify the particle that is the least penetrating.

Which element is a very good conductor of electricity?

How many neutrons are in this isotope of tin?

Which is NOT true about the atomic number?

An element with electronic structure 1s² 2s² 2p⁴ is in which group of the periodic table?

Gamma rays will be deflected in a magnetic field.

A neutral atom has the same number of

Which statement comparing chemical and nuclear properties of isotopes is correct?

In attempting to explain the line spectrum of hydrogen,Bohr suggested that the energy of electrons in atoms is

The isotope is also called

What is the maximum number of electrons that can occupy the 2s sublevel?

An s sublevel can hold a maximum of

Which orbital will have the lowest energy?

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