Question 1

What is the purpose of a spectroscope?

Accepted Answer

A)  It separates light into its different frequencies. 
B)  It separates light into its different wavelengths. 
C)  It segregates light by the different amounts of energy it contains. 
D)  all of the above 
E)  It is used to measure the length of spects. 
A)  It separates light into its different frequencies. 
B)  It separates light into its different wavelengths. 
C)  It segregates light by the different amounts of energy it contains. 
D)  all of the above 
E)  It is used to measure the length of spects. D

Question 2

If two protons and two neutrons are removed from the nucleus of the oxygen-16 isotope, a nucleus of which element remains?

Accepted Answer

A)  nitrogen-12 
B)  carbon-12 
C)  neon-18 
D)  carbon-14 
A)  nitrogen-12 
B)  carbon-12 
C)  neon-18 
D)  carbon-14 B

Question 3

Which of these shows light waves in order of increasing energy?

Accepted Answer

A)  Radio < Microwave < Infrared < Ultraviolet < Visible 
B)  Visible < Ultraviolet < Microwave < Infrared < Radio 
C)  Ultraviolet < Visible < Infrared < Microwave < Radio 
D)  Radio < Microwave < Infrared < Visible < Ultraviolet 
A)  Radio < Microwave < Infrared < Ultraviolet < Visible 
B)  Visible < Ultraviolet < Microwave < Infrared < Radio 
C)  Ultraviolet < Visible < Infrared < Microwave < Radio 
D)  Radio < Microwave < Infrared < Visible < Ultraviolet D

Question 4

When we breathe we inhale oxygen,   , and exhale carbon dioxide,   , plus water vapor,   O. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?

Accepted Answer

A)  The air we inhale has more mass; Breathing causes you to lose weight. 
B)  The air we exhale has more mass; Breathing causes you to lose weight. 
C)  The air we inhale has more mass; Breathing causes you to gain weight. 
D)  The air we exhale has more mass; Breathing causes you to gain weight. 
A)  The air we inhale has more mass; Breathing causes you to lose weight. 
B)  The air we exhale has more mass; Breathing causes you to lose weight. 
C)  The air we inhale has more mass; Breathing causes you to gain weight. 
D)  The air we exhale has more mass; Breathing causes you to gain weight.

Question 5

How does Rutherford's model of the atom explain why some of the alpha particles directed at the gold foil were deflected straight back toward the source?

Accepted Answer

A)  Alpha particles sling shot around the atomic nucleus much like comets sling shot around the sun. 
B)  Each atom has a center in which mass is very dense, but elastic. 
C)  The gold nucleus is able to deflect alpha particles much like a mirror is able to reflect photons. 
D)  The atomic nucleus is very small but dense and carries a positive electric charge. 
A)  Alpha particles sling shot around the atomic nucleus much like comets sling shot around the sun. 
B)  Each atom has a center in which mass is very dense, but elastic. 
C)  The gold nucleus is able to deflect alpha particles much like a mirror is able to reflect photons. 
D)  The atomic nucleus is very small but dense and carries a positive electric charge.

Question 6

Which of the following is a property of light?

Accepted Answer

A)  It is a wave. 
B)  It is a particle. 
C)  Its energy comes in packets of uniform size. 
D)  all of the above 
E)  none of the above 
A)  It is a wave. 
B)  It is a particle. 
C)  Its energy comes in packets of uniform size. 
D)  all of the above 
E)  none of the above

Question 7

What is the main difference between a conceptual model and a physical model?

Accepted Answer

A)  A physical model represents the shape and form while a conceptual model describes how a system behaves. 
B)  A conceptual model represents the shape and form while a physical model describes how a system behaves. 
C)  Physical models can only be used to represent the real world. 
D)  Conceptual models can only be used to describe concepts. 
E)  Physical models and conceptual models can be used to describe the same things. 
A)  A physical model represents the shape and form while a conceptual model describes how a system behaves. 
B)  A conceptual model represents the shape and form while a physical model describes how a system behaves. 
C)  Physical models can only be used to represent the real world. 
D)  Conceptual models can only be used to describe concepts. 
E)  Physical models and conceptual models can be used to describe the same things.

Question 8

What property of an electron makes it possible to use electron microscopes?

Accepted Answer

A)  They can be focused using smaller lenses. 
B)  They have shorter wavelengths than visible light. 
C)  They are electrically charged. 
D)  They can be generated with electricity. 
E)  none of the above 
A)  They can be focused using smaller lenses. 
B)  They have shorter wavelengths than visible light. 
C)  They are electrically charged. 
D)  They can be generated with electricity. 
E)  none of the above

Question 9

Isotopes of the same element have a different number of ________.

Accepted Answer

A)  protons 
B)  neutrons 
C)  electrons 
D)  photons 
A)  protons 
B)  neutrons 
C)  electrons 
D)  photons

Question 10

The ________ represents the complete range of frequencies of light energy from radio waves to gamma rays.

Accepted Answer

A)  electromagnetic spectrum 
B)  electron configuration 
C)  probability cloud 
D)  frequency dependence 
E)  spectroscopic model 
A)  electromagnetic spectrum 
B)  electron configuration 
C)  probability cloud 
D)  frequency dependence 
E)  spectroscopic model

Question 11

Rank the following by the relative amounts of energy, from most energetic to least:

Accepted Answer

A)  gamma rays, blue light, red light, radio waves 
B)  gamma rays, radio waves, blue light, red light 
C)  radio waves, gamma rays, blue light, red light 
D)  blue light, red light, radio waves, gamma rays 
E)  red light, radio waves, blue light, gamma rays 
A)  gamma rays, blue light, red light, radio waves 
B)  gamma rays, radio waves, blue light, red light 
C)  radio waves, gamma rays, blue light, red light 
D)  blue light, red light, radio waves, gamma rays 
E)  red light, radio waves, blue light, gamma rays

Question 12

Does it make sense to say that a textbook is about 99.9 percent empty space?

Accepted Answer

A)  No. A textbook is a solid and thus is quite dense. Therefore it is not 99.9 percent empty space. 
B)  No. Only gases are considered to be 99.9 percent empty space. Liquids and solids are not. 
C)  Yes. A textbook like all material things is made up of atoms, which are considered to be 99.9 percent empty space. 
D)  No. A textbook could only be considered to be 99.9 percent empty space if it were combusted. 
A)  No. A textbook is a solid and thus is quite dense. Therefore it is not 99.9 percent empty space. 
B)  No. Only gases are considered to be 99.9 percent empty space. Liquids and solids are not. 
C)  Yes. A textbook like all material things is made up of atoms, which are considered to be 99.9 percent empty space. 
D)  No. A textbook could only be considered to be 99.9 percent empty space if it were combusted.

Question 13

Which of the following statements does not describe a proton?

Accepted Answer

A)  It orbits around the nucleus of an atom. 
B)  It has a positive charge equivalent but opposite of an electron's. 
C)  It is much more massive than an electron. 
D)  It is a nucleon. 
E)  It is attracted to negatively charged electrical plates. 
A)  It orbits around the nucleus of an atom. 
B)  It has a positive charge equivalent but opposite of an electron's. 
C)  It is much more massive than an electron. 
D)  It is a nucleon. 
E)  It is attracted to negatively charged electrical plates.

Question 14

If a neutral element has the following chemical notation, how many electrons does it have? fluorine-19

Accepted Answer

A)  9 
B)  10 
C)  11 
D)  19 
E)  none of the above 
A)  9 
B)  10 
C)  11 
D)  19 
E)  none of the above

Question 15

Which of the following atoms is the smallest?

Accepted Answer

A)  F 
B)  Cl 
C)  Br 
D)  I 
E)  At 
A)  F 
B)  Cl 
C)  Br 
D)  I 
E)  At

Question 16

Which color of light comes from the higher energy transition, red or blue?

Accepted Answer

A)  Blue is a higher frequency and therefore corresponds to a lower energy level transition. 
B)  Blue is a higher frequency and therefore corresponds to a higher energy level transition. 
C)  Red is a higher frequency and therefore corresponds to a lower energy level transition. 
D)  Red is a higher frequency and therefore corresponds to a higher energy level transition. 
A)  Blue is a higher frequency and therefore corresponds to a lower energy level transition. 
B)  Blue is a higher frequency and therefore corresponds to a higher energy level transition. 
C)  Red is a higher frequency and therefore corresponds to a lower energy level transition. 
D)  Red is a higher frequency and therefore corresponds to a higher energy level transition.

Question 17

What is the main tenet of Planck's quantum hypothesis?

Accepted Answer

A)  Energy comes in discrete packets of a certain minimum size. 
B)  Energy is composed of subatomic particles called quanta. 
C)  Energy is a continuum, but light is quantized. 
D)  Energy can be converted into matter through nuclear quanta. 
E)  Light is composed of waves that exist only at certain quantum fundamental frequencies. 
A)  Energy comes in discrete packets of a certain minimum size. 
B)  Energy is composed of subatomic particles called quanta. 
C)  Energy is a continuum, but light is quantized. 
D)  Energy can be converted into matter through nuclear quanta. 
E)  Light is composed of waves that exist only at certain quantum fundamental frequencies.

Question 18

Which of the following best explains what is happening when an atom emits light?

Accepted Answer

A)  An electron is dropping from a higher to a lower energy level with the difference in energy between the two being emitted as light energy. 
B)  A proton is undergoing a nuclear change in the nucleus and is emitting a high energy light wave in the process. 
C)  An electron is jumping from a low energy state to a high energy state with the difference in energy being converted to light energy. 
D)  Heat energy is speeding up the orbit of the electrons and the resulting Doppler shift causes light to be emitted from the electrons. 
E)  Heat energy is converting a neutron into a proton and an electron, which is ejected into the orbit of the nucleus, releasing light energy. 
A)  An electron is dropping from a higher to a lower energy level with the difference in energy between the two being emitted as light energy. 
B)  A proton is undergoing a nuclear change in the nucleus and is emitting a high energy light wave in the process. 
C)  An electron is jumping from a low energy state to a high energy state with the difference in energy being converted to light energy. 
D)  Heat energy is speeding up the orbit of the electrons and the resulting Doppler shift causes light to be emitted from the electrons. 
E)  Heat energy is converting a neutron into a proton and an electron, which is ejected into the orbit of the nucleus, releasing light energy.

Question 19

Which of the following atoms is the largest?

Accepted Answer

A)  Ba 
B)  Sr 
C)  Ca 
D)  Mg 
E)  Be 
A)  Ba 
B)  Sr 
C)  Ca 
D)  Mg 
E)  Be

Question 20

What vibrates within an atom as it emits electromagnetic waves?

Accepted Answer

A)  the electron 
B)  Vibration within the atom is not the cause of the emission of electromagnetic waves. 
C)  the nucleus 
D)  Nothing vibrates within an atom. Vibration would make an atom unstable. 
A)  the electron 
B)  Vibration within the atom is not the cause of the emission of electromagnetic waves. 
C)  the nucleus 
D)  Nothing vibrates within an atom. Vibration would make an atom unstable.

What is the purpose of a spectroscope?

If two protons and two neutrons are removed from the nucleus of the oxygen-16 isotope, a nucleus of which element remains?

Which of these shows light waves in order of increasing energy?

When we breathe we inhale oxygen, , and exhale carbon dioxide, , plus water vapor, O. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?

How does Rutherford's model of the atom explain why some of the alpha particles directed at the gold foil were deflected straight back toward the source?

Which of the following is a property of light?

What is the main difference between a conceptual model and a physical model?

What property of an electron makes it possible to use electron microscopes?

Isotopes of the same element have a different number of ________.

The ________ represents the complete range of frequencies of light energy from radio waves to gamma rays.

Rank the following by the relative amounts of energy, from most energetic to least:

Does it make sense to say that a textbook is about 99.9 percent empty space?

Which of the following statements does not describe a proton?

If a neutral element has the following chemical notation, how many electrons does it have? fluorine-19

Which of the following atoms is the smallest?

Which color of light comes from the higher energy transition, red or blue?

What is the main tenet of Planck's quantum hypothesis?

Which of the following best explains what is happening when an atom emits light?

Which of the following atoms is the largest?

What vibrates within an atom as it emits electromagnetic waves?

About Science

Particles of Matter

Elements of Chemistry

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters

Exam 4: Subatomic Particles

What is the purpose of a spectroscope?

If two protons and two neutrons are removed from the nucleus of the oxygen-16 isotope, a nucleus of which element remains?

Which of these shows light waves in order of increasing energy?

When we breathe we inhale oxygen, , and exhale carbon dioxide, , plus water vapor, O. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?

How does Rutherford's model of the atom explain why some of the alpha particles directed at the gold foil were deflected straight back toward the source?

Which of the following is a property of light?

What is the main difference between a conceptual model and a physical model?

What property of an electron makes it possible to use electron microscopes?

Isotopes of the same element have a different number of ________.

The ________ represents the complete range of frequencies of light energy from radio waves to gamma rays.

Rank the following by the relative amounts of energy, from most energetic to least:

Does it make sense to say that a textbook is about 99.9 percent empty space?

Which of the following statements does not describe a proton?

If a neutral element has the following chemical notation, how many electrons does it have? fluorine-19

Which of the following atoms is the smallest?

Which color of light comes from the higher energy transition, red or blue?

What is the main tenet of Planck's quantum hypothesis?

Which of the following best explains what is happening when an atom emits light?

Which of the following atoms is the largest?

What vibrates within an atom as it emits electromagnetic waves?

About Science

Particles of Matter

Elements of Chemistry

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters