Question 1

An element with 2 valence electrons is

Accepted Answer

A) Se. 
B) Si. 
C) Ca. 
D) Rb. 
E) C. 
A) Se. 
B) Si. 
C) Ca. 
D) Rb. 
E) C. C

Question 2

How many electrons are there in the valence shell of a nitrogen atom?

Accepted Answer

A) 0 
B) 2 
C) 3 
D) 5 
E) 7 
A) 0 
B) 2 
C) 3 
D) 5 
E) 7 D

Question 3

Which chemical symbol represents a metalloid?

Accepted Answer

A) Al 
B) B 
C) Ga 
D) Zn 
E) Ar 
A) Al 
B) B 
C) Ga 
D) Zn 
E) Ar B

Question 4

Element Z has the following properties:
A.noncombustible
B.unreactive
C.colorless,odorless gas at room temperature
D.nonconductor of electricity
Element Z can be classified as a ________ and will be found ________ the zigzag line of the periodic table.

Accepted Answer

A) metal;to the left of 
B) metalloid;along side of 
C) non-metal;to the right of 
D) non-metal;along side of 
E) metal;to the right of 
A) metal;to the left of 
B) metalloid;along side of 
C) non-metal;to the right of 
D) non-metal;along side of 
E) metal;to the right of

Question 5

Which chemical symbol represents a metallic element?

Accepted Answer

A) Ar 
B) Br 
C) Ca 
D) H 
E) P 
A) Ar 
B) Br 
C) Ca 
D) H 
E) P

Question 6

An atom with Z = 31 and A = 69 contains ________ protons and ________ neutrons.

Accepted Answer

A) 31;69 
B) 69;31 
C) 31;38 
D) 38;31 
E) 31;100 
A) 31;69 
B) 69;31 
C) 31;38 
D) 38;31 
E) 31;100

Question 7

Element Z has the following properties:
A.silvery-white solid at room temperature
B.malleable
C.used as a catalyst
D.conducts electricity
Element Z can be classified as a ________ and will be found ________ the zigzag line of the periodic table.

Accepted Answer

A) metal;along side of 
B) metalloid;along side of 
C) non-metal;to the right of 
D) non-metal;along side of 
E) metal;to the left of 
A) metal;along side of 
B) metalloid;along side of 
C) non-metal;to the right of 
D) non-metal;along side of 
E) metal;to the left of

Question 8

Transition metals can also be called

Accepted Answer

A) s-block elements. 
B) p-block elements. 
C) d-block elements. 
D) f-block elements. 
E) precious metals. 
A) s-block elements. 
B) p-block elements. 
C) d-block elements. 
D) f-block elements. 
E) precious metals.

Question 9

In a neutral atom the number of ________ is equal to the number of ________.

Accepted Answer

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

Question 10

For the isotope 71Ga,Z = ________ and A = ________.

Accepted Answer

A) 31;40 
B) 71;31 
C) 71;40 
D) 31;71 
E) 31;69.723 
A) 31;40 
B) 71;31 
C) 71;40 
D) 31;71 
E) 31;69.723

Question 11

Explain the term "quantized" as it applies to the energy of electrons.(Optional: Be sure to include an example that has not been previously mentioned of something that is quantized. )

Accepted Answer

The term "quantized" means that their el

Question 12

Adding one neutron to the nucleus of an atom

Accepted Answer

A) converts it to an isotope of the same element. 
B) increases its atomic mass by two units,but does not change its atomic number. 
C) increases its atomic number by one unit but does not change its atomic mass. 
D) does not change either its atomic number or its atomic mass. 
E) converts it to an atom of a different element. 
A) converts it to an isotope of the same element. 
B) increases its atomic mass by two units,but does not change its atomic number. 
C) increases its atomic number by one unit but does not change its atomic mass. 
D) does not change either its atomic number or its atomic mass. 
E) converts it to an atom of a different element.

Question 13

Adding one proton to the nucleus of an atom

Accepted Answer

A) converts it to an isotope of the same element. 
B) increases its atomic mass by one unit,but does not change its atomic number. 
C) increases its atomic number by one unit but does not change its atomic mass. 
D) does not change either its atomic number or its atomic mass. 
E) converts it to an atom of a different element. 
A) converts it to an isotope of the same element. 
B) increases its atomic mass by one unit,but does not change its atomic number. 
C) increases its atomic number by one unit but does not change its atomic mass. 
D) does not change either its atomic number or its atomic mass. 
E) converts it to an atom of a different element.

Question 14

Which of the following subshells consists of three orbitals?

Accepted Answer

A) 4s 
B) 4p 
C) 4d 
D) 4f 
E) none of the above 
A) 4s 
B) 4p 
C) 4d 
D) 4f 
E) none of the above

Question 15

An imaginary element Xq consists of two isotopes having masses of 100.0 amu and 102.0 amu.A sample of Xq was found to contain 20.0% of the 100Xq isotope and 80.0% of the 102Xq.Calculate the atomic weight of Xq.

Accepted Answer

A) 100.2 amu 
B) 100.4 amu 
C) 101.0 amu 
D) 101.6 amu 
E) 202.0 amu 
A) 100.2 amu 
B) 100.4 amu 
C) 101.0 amu 
D) 101.6 amu 
E) 202.0 amu

Question 16

Which particle has a mass approximately equal to the mass of a proton?

Accepted Answer

A) atom 
B) electron 
C) neutron 
D) nucleus 
E) quark 
A) atom 
B) electron 
C) neutron 
D) nucleus 
E) quark

Question 17

An atom that contains 47 protons,47 electrons,and 60 neutrons is an isotope of

Accepted Answer

A) Ag. 
B) Al. 
C) Nd. 
D) Bh. 
E) cannot be determined from the information given 
A) Ag. 
B) Al. 
C) Nd. 
D) Bh. 
E) cannot be determined from the information given

Question 18

Protons possess a ________ charge,and neutrons possess a ________ charge.

Accepted Answer

A) negative;negative 
B) negative;positive 
C) positive;negative 
D) positive;zero 
E) zero;positive 
A) negative;negative 
B) negative;positive 
C) positive;negative 
D) positive;zero 
E) zero;positive

Question 19

The shell having n = 2 contains ________ subshells,________ orbitals,and up to ________ electrons.

Accepted Answer

A) 1;2;4 
B) 2;4;8 
C) 3;6;12 
D) 4;8;16 
E) none of the above 
A) 1;2;4 
B) 2;4;8 
C) 3;6;12 
D) 4;8;16 
E) none of the above

Question 20

An atom containing 47 protons,47 electrons,and 60 neutrons has a mass number of

Accepted Answer

A) 13. 
B) 47. 
C) 60. 
D) 107. 
E) 154. 
A) 13. 
B) 47. 
C) 60. 
D) 107. 
E) 154.

Exam 2: Atoms and the Periodic Table

An element with 2 valence electrons is

How many electrons are there in the valence shell of a nitrogen atom?

Which chemical symbol represents a metalloid?

Element Z has the following properties: A.noncombustible B.unreactive C.colorless,odorless gas at room temperature D.nonconductor of electricity Element Z can be classified as a ________ and will be found ________ the zigzag line of the periodic table.

Which chemical symbol represents a metallic element?

An atom with Z = 31 and A = 69 contains ________ protons and ________ neutrons.

Element Z has the following properties: A.silvery-white solid at room temperature B.malleable C.used as a catalyst D.conducts electricity Element Z can be classified as a ________ and will be found ________ the zigzag line of the periodic table.

Transition metals can also be called

In a neutral atom the number of ________ is equal to the number of ________.

For the isotope 71Ga,Z = ________ and A = ________.

Explain the term "quantized" as it applies to the energy of electrons.(Optional: Be sure to include an example that has not been previously mentioned of something that is quantized. )

Adding one neutron to the nucleus of an atom

Adding one proton to the nucleus of an atom

Which of the following subshells consists of three orbitals?

An imaginary element Xq consists of two isotopes having masses of 100.0 amu and 102.0 amu.A sample of Xq was found to contain 20.0% of the 100Xq isotope and 80.0% of the 102Xq.Calculate the atomic weight of Xq.

Which particle has a mass approximately equal to the mass of a proton?

An atom that contains 47 protons,47 electrons,and 60 neutrons is an isotope of

Protons possess a ________ charge,and neutrons possess a ________ charge.

The shell having n = 2 contains ________ subshells,________ orbitals,and up to ________ electrons.

An atom containing 47 protons,47 electrons,and 60 neutrons has a mass number of

Matter and Measurements

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Aldehydes and Ketones

Amines

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

Carbohydrates

The Generation of Biochemical Energy

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Protein and Amino Acid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

Element Z has the following properties: A.noncombustible B.unreactive C.colorless,odorless gas at room temperature D.nonconductor of electricity Element Z can be classified as a and will be found the zigzag line of the periodic table.

An atom with Z = 31 and A = 69 contains protons and neutrons.

Element Z has the following properties: A.silvery-white solid at room temperature B.malleable C.used as a catalyst D.conducts electricity Element Z can be classified as a and will be found the zigzag line of the periodic table.

In a neutral atom the number of is equal to the number of .

For the isotope ⁷¹Ga,Z = and A = .

An imaginary element Xq consists of two isotopes having masses of 100.0 amu and 102.0 amu.A sample of Xq was found to contain 20.0% of the ¹⁰⁰Xq isotope and 80.0% of the ¹⁰²Xq.Calculate the atomic weight of Xq.

Protons possess a charge,and neutrons possess a charge.

The shell having n = 2 contains subshells, orbitals,and up to electrons.