Question 1

Which of the following is used to represent molecular bromine?

Accepted Answer

A) Be 
B) B 
C) 2Br 
D) Br2 
E) Br 
A) Be 
B) B 
C) 2Br 
D) Br2 
E) Br

Question 2

When barium metal reacts with chlorine gas, it forms an ionic compound, BaCl2. In the course of the reaction, each Ba atom

Accepted Answer

A) loses two protons. 
B) loses two electrons. 
C) gains two protons. 
D) gains two electrons. 
E) loses two neutrons. 
A) loses two protons. 
B) loses two electrons. 
C) gains two protons. 
D) gains two electrons. 
E) loses two neutrons.

Question 3

List the seven diatomic molecules that are the most stable form of their given element.

Accepted Answer

H₂, N₂, O₂, F

Question 4

How many protons and electrons are in the N3- ion?

Accepted Answer

7 protons;

Question 5

What is the name for the compound NaCl3?

Accepted Answer

A) sodium chlorate 
B) sodium chlorite 
C) sodium perchloride 
D) sodium trichloride 
E) There is no such compound. 
A) sodium chlorate 
B) sodium chlorite 
C) sodium perchloride 
D) sodium trichloride 
E) There is no such compound.

Question 6

The name of MnCl3 is magnesium(III)chloride.

Accepted Answer

A) True 
 B)False

Question 7

How many oxygen atoms are in one molecule of Mg(NO3)2?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 5 
E) 6 
A) 1 
B) 2 
C) 3 
D) 5 
E) 6

Question 8

Metalloids' electrical conductivity tends to be lower than metals, but they can have higher conductivity than many metals when they are used in materials called ________.

Accepted Answer

The answer of Metalloids' electrical conductivity tends to be lower...

Question 9

A student attempts to balance a chemical equation and comes up with the following result:8KClO3 + C12H22O10 $\rarr$ 8KCl + 12CO2 + 11H2O However, he wrote the initial equation wrong and therefore could not balance the equation. Which element(s)are not balanced in this result? Hint: Make a chart and identify how many elements you have on each side of the arrow.

Accepted Answer

A) Cl 
B) O 
C) H 
D) O and H 
E) C 
A) Cl 
B) O 
C) H 
D) O and H 
E) C

Question 10

How many hydrogen atoms are on the reactant side of the chemical equation below?
2(NH4)3PO4 + 3Ba(C2H3O2)2 $\rarr$ Ba3(PO4)2 + 6NH4C2H3O2

Accepted Answer

A) 35 
B) 28 
C) 8 
D) 24 
E) 42 
A) 35 
B) 28 
C) 8 
D) 24 
E) 42

Question 11

Due to their properties, and where they exist in nature, the group 2A metals are called the lanthanides.

Accepted Answer

A) True 
 B)False

Question 12

What is the name of the compound, V(NO3)3?

Accepted Answer

A) vanadium trinitrate 
B) vanadium nitrite 
C) vanadium(III)nitrite 
D) vanadium nitrate 
E) vanadium(III)nitrate 
A) vanadium trinitrate 
B) vanadium nitrite 
C) vanadium(III)nitrite 
D) vanadium nitrate 
E) vanadium(III)nitrate

Question 13

What is the most likely name for BrF?

Accepted Answer

A) bromine monofluoride 
B) bromine fluorine 
C) monobromide fluoride 
D) bromine difluorine 
E) bromide fluorine 
A) bromine monofluoride 
B) bromine fluorine 
C) monobromide fluoride 
D) bromine difluorine 
E) bromide fluorine

Question 14

What is the name of the following compound: NH4NO3?

Accepted Answer

Question 15

A compound is known to contain one C atom for each water molecule (H2O). If the compound has six carbon atoms, what is the general formula representing the compound?

Accepted Answer

Question 16

What is the correct name for the compound Na2O?

Accepted Answer

A) disodium oxide 
B) sodium oxide 
C) sodium(I)oxide 
D) sodium peroxide 
E) sodium superoxide 
A) disodium oxide 
B) sodium oxide 
C) sodium(I)oxide 
D) sodium peroxide 
E) sodium superoxide

Question 17

What is the name for the ionic compound CuH2CrO4?

Accepted Answer

A) copper(I)hydrogen chromate 
B) copper(II)bichromic acid 
C) copper hydrogen chromate tetraoxide 
D) copper hydrogen sulfate 
E) There is no known ionic compound with this formula. 
A) copper(I)hydrogen chromate 
B) copper(II)bichromic acid 
C) copper hydrogen chromate tetraoxide 
D) copper hydrogen sulfate 
E) There is no known ionic compound with this formula.

Question 18

Bromine reacts with a metal, which we will represent by the symbol M, to form a compound whose formula is M2Br. Element M is most probably

Accepted Answer

A) a metalloid. 
B) a group 2A element. 
C) a chalcogen. 
D) a group 5A element. 
E) There are no elements that can react with bromine to give the formula M2Br. 
A) a metalloid. 
B) a group 2A element. 
C) a chalcogen. 
D) a group 5A element. 
E) There are no elements that can react with bromine to give the formula M2Br.

Question 19

How many of each type of atoms are needed on the left to balance the equation? 3H2SO4 + ?? → Al2(SO4)3 + 6H2O Hint: Distribute coefficients across the entire compound and remember how subscripts apply to everything inside the parentheses.

Accepted Answer

Question 20

An important characteristic of a compound's formula is it specifies the atomic composition of the compound.

Accepted Answer

A) True 
 B)False

Exam 3: Elements, Compounds, and the Periodic Table

Which of the following is used to represent molecular bromine?

When barium metal reacts with chlorine gas, it forms an ionic compound, BaCl2. In the course of the reaction, each Ba atom

List the seven diatomic molecules that are the most stable form of their given element.

How many protons and electrons are in the N3- ion?

What is the name for the compound NaCl3?

The name of MnCl3 is magnesium(III)chloride.

How many oxygen atoms are in one molecule of Mg(NO3)2?

Metalloids' electrical conductivity tends to be lower than metals, but they can have higher conductivity than many metals when they are used in materials called ________.

How many hydrogen atoms are on the reactant side of the chemical equation below? 2(NH4)3PO4 + 3Ba(C2H3O2)2 →\rarr→ Ba3(PO4)2 + 6NH4C2H3O2

Due to their properties, and where they exist in nature, the group 2A metals are called the lanthanides.

What is the name of the compound, V(NO3)3?

What is the most likely name for BrF?

What is the name of the following compound: NH4NO3?

A compound is known to contain one C atom for each water molecule (H2O). If the compound has six carbon atoms, what is the general formula representing the compound?

What is the correct name for the compound Na2O?

What is the name for the ionic compound CuH2CrO4?

Bromine reacts with a metal, which we will represent by the symbol M, to form a compound whose formula is M2Br. Element M is most probably

How many of each type of atoms are needed on the left to balance the equation? 3H2SO4 + ?? → Al2(SO4)3 + 6H2O Hint: Distribute coefficients across the entire compound and remember how subscripts apply to everything inside the parentheses.

An important characteristic of a compound's formula is it specifies the atomic composition of the compound.

A Very Brief History of Chemistry

Scientific Measurements

The Mole and Stoichiometry

Molecular View of Reactions in Aqueous Solutions

Oxidation-Reduction Reactions

Energy and Chemical Change

The Quantum Mechanical Atom

The Basics of Chemical Bonding

Theories of Bonding and Structure

Properties of Gases

Intermolecular Attractions and the Properties of Liquids and Solids

Mixtures at the Molecular Level: Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases, a Molecular Look

Acid-Base Equilibria in Aqueous Solutions

Solubility and Simultaneous Equilibria

Thermodynamics

Electrochemistry

Nuclear Reactions and Their Role in Chemistry

Metal Complexes

Organic Compounds, Polymers, and Biochemicals

Filters

When barium metal reacts with chlorine gas, it forms an ionic compound, BaCl₂. In the course of the reaction, each Ba atom

How many protons and electrons are in the N^3- ion?

What is the name for the compound NaCl₃?

The name of MnCl₃ is magnesium(III)chloride.

How many oxygen atoms are in one molecule of Mg(NO₃)₂?

How many hydrogen atoms are on the reactant side of the chemical equation below? 2(NH₄)₃PO₄ + 3Ba(C₂H₃O₂)₂ $\rarr$ Ba₃(PO₄)₂ + 6NH₄C₂H₃O₂

What is the name of the compound, V(NO₃)₃?

What is the name of the following compound: NH₄NO₃?

A compound is known to contain one C atom for each water molecule (H₂O). If the compound has six carbon atoms, what is the general formula representing the compound?

What is the correct name for the compound Na₂O?

What is the name for the ionic compound CuH₂CrO₄?

Bromine reacts with a metal, which we will represent by the symbol M, to form a compound whose formula is M₂Br. Element M is most probably

How many of each type of atoms are needed on the left to balance the equation? 3H₂SO₄ + ?? → Al₂(SO₄)₃ + 6H₂O Hint: Distribute coefficients across the entire compound and remember how subscripts apply to everything inside the parentheses.