Question 1

What is the name of Ba(NO2)2·3H2O?

Accepted Answer

A)  barium nitrite 
B)  trihydrobarium(II) nitrite 
C)  barium nitrite trihydrate 
D)  barium(II) nitrite trihydrate 
E)  barium nitrate trihydrate 
A)  barium nitrite 
B)  trihydrobarium(II) nitrite 
C)  barium nitrite trihydrate 
D)  barium(II) nitrite trihydrate 
E)  barium nitrate trihydrate

Question 2

Which group is given the name chalcogens?

Accepted Answer

The answer of Which group is given the name chalcogens?...

Question 3

Which of the following is a metal?

Accepted Answer

A)  Nitrogen, N, Z = 7 
B)  Phosphorus, P, Z = 15 
C)  Arsenic, As, Z = 33 
D)  Thallium, Tl, Z = 81 
E)  Silicon, Si, Z = 14 
A)  Nitrogen, N, Z = 7 
B)  Phosphorus, P, Z = 15 
C)  Arsenic, As, Z = 33 
D)  Thallium, Tl, Z = 81 
E)  Silicon, Si, Z = 14

Question 4

What is the name of Cu2O?

Accepted Answer

Question 5

Copper (Cu) is a transition metal.

Accepted Answer

A) True 
 B)False

Question 6

Atoms of the same element with different mass numbers are called

Accepted Answer

A)  ions. 
B)  neutrons. 
C)  chemical groups. 
D)  chemical families. 
E)  isotopes. 
A)  ions. 
B)  neutrons. 
C)  chemical groups. 
D)  chemical families. 
E)  isotopes.

Question 7

What is the law that describes different samples of a given compound that always contain the same elements in the same mass ratio?

Accepted Answer

law of def

Question 8

What is the name given for the elements in Group 1A in the periodic table?

Accepted Answer

The answer of What is the name given for the...

Question 9

Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope bromine-81,   . Select the combination which lists the correct atomic number, number of neutrons, and mass number, respectively.

Accepted Answer

A)  35, 46, 81 
B)  35, 81, 46 
C)  81, 46, 35 
D)  46, 81, 35 
E)  35, 81, 116 
A)  35, 46, 81 
B)  35, 81, 46 
C)  81, 46, 35 
D)  46, 81, 35 
E)  35, 81, 116

Question 10

The table below describes four atoms.   Which atoms represent the same element?

Accepted Answer

Atoms A and D repres

Question 11

What is the term for the total number of neutrons and protons in the nucleus of each atom of an element?

Accepted Answer

A)  Isotope number 
B)  Mass number 
C)  Mass-to-charge ratio 
D)  Atomic number 
E)  Atomic mass units 
A)  Isotope number 
B)  Mass number 
C)  Mass-to-charge ratio 
D)  Atomic number 
E)  Atomic mass units

Question 12

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  NCl3 
B)  BaCl2 
C)  CO 
D)  SO2 
E)  SF4 
A)  NCl3 
B)  BaCl2 
C)  CO 
D)  SO2 
E)  SF4

Question 13

________ are atoms that have the same atomic number (Z) but different mass numbers (A).

Accepted Answer

The answer of ________ are atoms that have the same...

Question 14

The empirical formula is the simplest whole number ratio of atoms representing a chemical formula of a molecule.

Accepted Answer

A) True 
 B)False

Question 15

Which of these elements is chemically similar to magnesium?

Accepted Answer

A)  Sulfur 
B)  Calcium 
C)  Iron 
D)  Nickel 
E)  Potassium 
A)  Sulfur 
B)  Calcium 
C)  Iron 
D)  Nickel 
E)  Potassium

Question 16

How many neutrons are there in an atom of lead whose mass number is 208?

Accepted Answer

A)  82 
B)  126 
C)  208 
D)  290 
E)  none of them 
A)  82 
B)  126 
C)  208 
D)  290 
E)  none of them

Question 17

What term defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom?

Accepted Answer

A)  Isotope number 
B)  Mass number 
C)  Mass-to-charge ratio 
D)  Atomic number 
E)  Atomic mass unit 
A)  Isotope number 
B)  Mass number 
C)  Mass-to-charge ratio 
D)  Atomic number 
E)  Atomic mass unit

Question 18

The formula for magnesium sulfate is

Accepted Answer

A)  MnS. 
B)  MgS. 
C)  MnSO3. 
D)  MgSO4. 
E)  MnSO4. 
A)  MnS. 
B)  MgS. 
C)  MnSO3. 
D)  MgSO4. 
E)  MnSO4.

Question 19

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Accepted Answer

A)  FeO 
B)  Fe2O 
C)  FeO3 
D)  Fe2O5 
E)  Fe2O3 
A)  FeO 
B)  Fe2O 
C)  FeO3 
D)  Fe2O5 
E)  Fe2O3

Question 20

Which pair of elements would be most likely to form an ionic compound?

Accepted Answer

A)  P and Br 
B)  Zn and K 
C)  F and Al 
D)  C and S 
E)  Al and Rb 
A)  P and Br 
B)  Zn and K 
C)  F and Al 
D)  C and S 
E)  Al and Rb

Exam 2: Atoms, Molecules, and Ions

What is the name of Ba(NO2)2·3H2O?

Which group is given the name chalcogens?

Which of the following is a metal?

What is the name of Cu2O?

Copper (Cu) is a transition metal.

Atoms of the same element with different mass numbers are called

What is the law that describes different samples of a given compound that always contain the same elements in the same mass ratio?

What is the name given for the elements in Group 1A in the periodic table?

Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope bromine-81, . Select the combination which lists the correct atomic number, number of neutrons, and mass number, respectively.

The table below describes four atoms. Which atoms represent the same element?

What is the term for the total number of neutrons and protons in the nucleus of each atom of an element?

Which of these compounds is most likely to be ionic?

________ are atoms that have the same atomic number (Z) but different mass numbers (A).

The empirical formula is the simplest whole number ratio of atoms representing a chemical formula of a molecule.

Which of these elements is chemically similar to magnesium?

How many neutrons are there in an atom of lead whose mass number is 208?

What term defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom?

The formula for magnesium sulfate is

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Which pair of elements would be most likely to form an ionic compound?

Chemistry: the Central Science

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

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What is the name of Ba(NO₂)₂·3H₂O?

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