Question 1

What is the best name for the I2O5 molecule?

Accepted Answer

A) diiodine pentoxide 
B) iodine pentoxygen 
C) pentoxygen iodide 
D) iodine dioxide 
E) diiodide oxide 
A) diiodine pentoxide 
B) iodine pentoxygen 
C) pentoxygen iodide 
D) iodine dioxide 
E) diiodide oxide

Question 2

The name of the compound Al(SO4)3 is

Accepted Answer

A) aluminum sulfide. 
B) aluminum sulfate. 
C) aluminum trisulfate. 
D) aluminum(III)sulfate. 
E) aluminum sulfite. 
A) aluminum sulfide. 
B) aluminum sulfate. 
C) aluminum trisulfate. 
D) aluminum(III)sulfate. 
E) aluminum sulfite.

Question 3

What is the name for the compound V2O5?

Accepted Answer

A) divanadium pentoxide 
B) vanadic oxide 
C) vanadium(V)oxide 
D) vanadium(V)pentoxide 
E) vanadous oxide 
A) divanadium pentoxide 
B) vanadic oxide 
C) vanadium(V)oxide 
D) vanadium(V)pentoxide 
E) vanadous oxide

Question 4

Which of these elements has the most similar chemical properties to sulfur?

Accepted Answer

A) calcium 
B) oxygen 
C) phosphorus 
D) bromine 
E) nitrogen 
A) calcium 
B) oxygen 
C) phosphorus 
D) bromine 
E) nitrogen

Question 5

How many atoms of each element appear on each side of the arrow in the following chemical equation? 3Cl3BNH2CH3 + 6(CH3)3N $\rarr$6(CH3)3NHCl + B3N3Cl3(CH3)3 Hint: Distribute coefficients across the entire compound for each reactant and product. Be sure to account for parenthesis.

Accepted Answer

A) 9Cl, 3B, 9N, 54H, 6C 
B) 9Cl, 3B, 9N, 69H, 21C 
C) 3Cl, 3B, 9N, 15H, 21C 
D) 9Cl, 1B, 9N, 54H, 9C 
E) 3Cl, 3B, 9N, 69H, 18C 
A) 9Cl, 3B, 9N, 54H, 6C 
B) 9Cl, 3B, 9N, 69H, 21C 
C) 3Cl, 3B, 9N, 15H, 21C 
D) 9Cl, 1B, 9N, 54H, 9C 
E) 3Cl, 3B, 9N, 69H, 18C

Question 6

The alkali metals like sodium and potassium are soft metals, so they are unreactive towards water.

Accepted Answer

A) True 
 B)False

Question 7

The symbol Te belongs to a metalloid in group ________.

Accepted Answer

The answer of The symbol Te belongs to a metalloid...

Question 8

Write the formula of the alkane hydrocarbon with seven carbon atoms.

Accepted Answer

The answer of Write the formula of the alkane hydrocarbon...

Question 9

Diamond and graphite are different forms of which element?

Accepted Answer

A) sodium 
B) carbon 
C) mercury 
D) gold 
E) calcium 
A) sodium 
B) carbon 
C) mercury 
D) gold 
E) calcium

Question 10

Which group of nonmetallic elements is called "inert"?

Accepted Answer

The answer of Which group of nonmetallic elements is called...

Question 11

Write the formula for the compound that has the atoms and, or groups in the order given: 3 Fe, and two groups made up of 1 As and 4 O. Hint: The groups of atoms are polyatomic ions.

Accepted Answer

The answer of Write the formula for the compound that...

Question 12

What is the name of the compound, HCN(g)?

Accepted Answer

A) hydrocarbonitride 
B) hydrocyanic acid 
C) hydrogen carbonitride 
D) hydrogen cyanate 
E) hydrogen cyanide 
A) hydrocarbonitride 
B) hydrocyanic acid 
C) hydrogen carbonitride 
D) hydrogen cyanate 
E) hydrogen cyanide

Question 13

Which of these elements has the most similar chemical properties to magnesium?

Accepted Answer

A) calcium 
B) sodium 
C) aluminum 
D) iron 
E) cesium 
A) calcium 
B) sodium 
C) aluminum 
D) iron 
E) cesium

Question 14

The formula for magnesium phosphide is Mg3P2.

Accepted Answer

A) True 
 B)False

Question 15

Which compound exists as a diatomic molecule in its free state?

Accepted Answer

A) magnesium 
B) manganese 
C) silicon 
D) arsenic 
E) chlorine 
A) magnesium 
B) manganese 
C) silicon 
D) arsenic 
E) chlorine

Question 16

Which compound is correctly represented as a hydrate?

Accepted Answer

A) C2H5OH2+ 
B) MgSO4·7H2O 
C) FeH2(CO)4 
D) O2S(OH)2 
E) [CrCl(H2O)5]Cl 
A) C2H5OH2+ 
B) MgSO4·7H2O 
C) FeH2(CO)4 
D) O2S(OH)2 
E) [CrCl(H2O)5]Cl

Question 17

What is the formula of the compound formed from the calcium ion and HCO3-?

Accepted Answer

Question 18

List the polyatomic ions, including the number of each type, present in the compound, (NH4)3PO4. Hint: Think about the requirements for forming ionic compounds and how this affects the number of each ion present in the formula.

Accepted Answer

A) 4N3-, 12H+, PO42- 
B) 3NH4+, 4PO43- 
C) N3-, 12H+, P3- ; 4O2- 
D) 3NH4+, PO43- 
E) 4NH+, 3PO43- 
A) 4N3-, 12H+, PO42- 
B) 3NH4+, 4PO43- 
C) N3-, 12H+, P3- ; 4O2- 
D) 3NH4+, PO43- 
E) 4NH+, 3PO43-

Question 19

Select the examples in which the formulas do not correctly match the names of the compounds indicated.   Hint: Write the correct name of each formula without looking at the names and then compare it to the choices.

Accepted Answer

A) II only 
B) II and III 
C) I, II and IV 
D) I and IV 
E) II, III and IV 
A) II only 
B) II and III 
C) I, II and IV 
D) I and IV 
E) II, III and IV

Question 20

Which of these elements has the most similar chemical properties silicon?

Accepted Answer

A) aluminum 
B) phosphorus 
C) nitrogen 
D) silver 
E) germanium 
A) aluminum 
B) phosphorus 
C) nitrogen 
D) silver 
E) germanium

Exam 3: Elements, Compounds, and the Periodic Table

What is the best name for the I2O5 molecule?

The name of the compound Al(SO4)3 is

What is the name for the compound V2O5?

Which of these elements has the most similar chemical properties to sulfur?

How many atoms of each element appear on each side of the arrow in the following chemical equation? 3Cl3BNH2CH3 + 6(CH3)3N →\rarr→ 6(CH3)3NHCl + B3N3Cl3(CH3)3 Hint: Distribute coefficients across the entire compound for each reactant and product. Be sure to account for parenthesis.

The alkali metals like sodium and potassium are soft metals, so they are unreactive towards water.

The symbol Te belongs to a metalloid in group ________.

Write the formula of the alkane hydrocarbon with seven carbon atoms.

Diamond and graphite are different forms of which element?

Which group of nonmetallic elements is called "inert"?

Write the formula for the compound that has the atoms and, or groups in the order given: 3 Fe, and two groups made up of 1 As and 4 O. Hint: The groups of atoms are polyatomic ions.

What is the name of the compound, HCN(g)?

Which of these elements has the most similar chemical properties to magnesium?

The formula for magnesium phosphide is Mg3P2.

Which compound exists as a diatomic molecule in its free state?

Which compound is correctly represented as a hydrate?

What is the formula of the compound formed from the calcium ion and HCO3-?

List the polyatomic ions, including the number of each type, present in the compound, (NH4)3PO4. Hint: Think about the requirements for forming ionic compounds and how this affects the number of each ion present in the formula.

Select the examples in which the formulas do not correctly match the names of the compounds indicated. Hint: Write the correct name of each formula without looking at the names and then compare it to the choices.

Which of these elements has the most similar chemical properties silicon?

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

What is the best name for the I₂O₅ molecule?

The name of the compound Al(SO₄)₃ is

What is the name for the compound V₂O₅?

The formula for magnesium phosphide is Mg₃P₂.

What is the formula of the compound formed from the calcium ion and HCO₃^-?

List the polyatomic ions, including the number of each type, present in the compound, (NH₄)₃PO₄. Hint: Think about the requirements for forming ionic compounds and how this affects the number of each ion present in the formula.