Question 1

Which of the following is true of a hydrogen bond in liquids?

Accepted Answer

A) It exists between hydrogen and an electronegative atom. 
B) It is the result of dipole attraction. 
C) Its bond energy is less than a covalent bond. 
D) Its bond length is longer than a covalent bond. 
E) all of the above 
A) It exists between hydrogen and an electronegative atom. 
B) It is the result of dipole attraction. 
C) Its bond energy is less than a covalent bond. 
D) Its bond length is longer than a covalent bond. 
E) all of the above

Question 2

What is the systematic name for MnSO₄ • H₂O?

Accepted Answer

A) manganese sulfate hydrate 
B) manganese sulfate monohydrate 
C) manganese(II)sulfite monohydrate 
D) manganese(II)sulfate monohydrate 
E) manganese(II)sulfate dihydrate 
A) manganese sulfate hydrate 
B) manganese sulfate monohydrate 
C) manganese(II)sulfite monohydrate 
D) manganese(II)sulfate monohydrate 
E) manganese(II)sulfate dihydrate

Question 3

Which of the following cations is found in soft water?

Accepted Answer

A) Ca2+ 
B) Fe₃+ 
C) Mg₂+ 
D) Na+ 
E) all of the above 
A) Ca2+ 
B) Fe₃+ 
C) Mg₂+ 
D) Na+ 
E) all of the above

Question 4

What is the term for an intermolecular attraction based on permanent dipoles involving a H atom bonded to an O or N atom?

Accepted Answer

A) dipole force 
B) dispersion force 
C) hydrogen bond 
D) intermolecular bond 
E) none of the above 
A) dipole force 
B) dispersion force 
C) hydrogen bond 
D) intermolecular bond 
E) none of the above

Question 5

Which of the following is an observed property of liquids?

Accepted Answer

A) Liquids are less dense than gases. 
B) Liquids compress or expand significantly. 
C) Liquids have a fixed shape and variable volume. 
D) Liquids that are insoluble mix homogeneously. 
E) none of the above 
A) Liquids are less dense than gases. 
B) Liquids compress or expand significantly. 
C) Liquids have a fixed shape and variable volume. 
D) Liquids that are insoluble mix homogeneously. 
E) none of the above

Question 6

What is the term for an attraction between two molecules with temporary dipoles?

Accepted Answer

A) dipole force 
B) dispersion force 
C) hydrogen bond 
D) intermolecular bond 
E) none of the above 
A) dipole force 
B) dispersion force 
C) hydrogen bond 
D) intermolecular bond 
E) none of the above

Question 7

Which of the following is true of the intermolecular attractions in liquids?

Accepted Answer

A) All polar molecules are attracted by dispersion forces. 
B) All polar molecules are attracted by dipole forces. 
C) Some polar molecules are attracted by hydrogen bonds. 
D) all of the above 
E) none of the above 
A) All polar molecules are attracted by dispersion forces. 
B) All polar molecules are attracted by dipole forces. 
C) Some polar molecules are attracted by hydrogen bonds. 
D) all of the above 
E) none of the above

Question 8

What is the experimentally observed bond angle in a water molecule?

Accepted Answer

A) 90° 
B) 104.5° 
C) 109.5° 
D) 120° 
E) 180° 
A) 90° 
B) 104.5° 
C) 109.5° 
D) 120° 
E) 180°

Question 9

A 73.6 g sample of aluminum is heated to 95.0 °C and dropped into 100.0 g of water at 20.0 °C.If the resulting temperature of the water is 30.0 °C,what is the specific heat of the metal?

Accepted Answer

A) 0.143 cal/(g x °
C)  
B) 0.209 cal/(g x °
C)  
C) 0.418 cal/(g x °
C)  
D) 0.486 cal/(g x °
C)  
E) 0.679 cal/(g x °
C)  
A) 0.143 cal/(g x °
C)  
B) 0.209 cal/(g x °
C)  
C) 0.418 cal/(g x °
C)  
D) 0.486 cal/(g x °
C)  
E) 0.679 cal/(g x °
C)

Question 10

What is the percentage of water in borax,Na₂B4O₇ • 10H₂O?

Accepted Answer

A) 4.72% 
B) 8.95% 
C) 47.2% 
D) 82.1% 
E) 89.5% 
A) 4.72% 
B) 8.95% 
C) 47.2% 
D) 82.1% 
E) 89.5%

Question 11

What is the strongest intermolecular force in a liquid containing molecules with H-O bonds?

Accepted Answer

A) covalent bonds 
B) dipole forces 
C) dispersion forces 
D) hydrogen bonds 
E) none of the above 
A) covalent bonds 
B) dipole forces 
C) dispersion forces 
D) hydrogen bonds 
E) none of the above

Question 12

What is the product from the reaction of water and a nonmetal oxide?

Accepted Answer

A) an acid 
B) a base 
C) a nonmetal hydroxide and hydrogen gas 
D) a nonmetal hydroxide and oxygen gas 
E) none of the above 
A) an acid 
B) a base 
C) a nonmetal hydroxide and hydrogen gas 
D) a nonmetal hydroxide and oxygen gas 
E) none of the above

Question 13

Which of the following explains why a needle can float on water?

Accepted Answer

A) The density of the water is greater than the needle. 
B) The molar mass of the water is greater than the needle. 
C) The surface tension of the water supports the needle. 
D) The vapor pressure of the water supports the needle. 
E) The viscosity of the water supports the needle. 
A) The density of the water is greater than the needle. 
B) The molar mass of the water is greater than the needle. 
C) The surface tension of the water supports the needle. 
D) The vapor pressure of the water supports the needle. 
E) The viscosity of the water supports the needle.

Question 14

Calculate the number of calories released when 25.0 g of water cools from 95.0 °C to 20.0 °C.The specific heat of water is 1.00 cal/(g x °C).

Accepted Answer

A) 25.0 cal 
B) 75.0 cal 
C) 5.00 x 102 cal 
D) 1.88 x 103 cal 
E) 2.38 x 103 cal 
A) 25.0 cal 
B) 75.0 cal 
C) 5.00 x 102 cal 
D) 1.88 x 103 cal 
E) 2.38 x 103 cal

Question 15

An unknown hydrate of calcium nitrate,Ca(NO₃)2 • XH₂O,is heated to give 30.5% water.What is the water of crystallization (X)for the hydrate?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 6 
E) 10 
A) 2 
B) 3 
C) 4 
D) 6 
E) 10

Question 16

What is the term for a crystalline solid composed of molecules which repeat in a regular pattern?

Accepted Answer

A) ionic solid 
B) metallic solid 
C) molecular solid 
D) regular solid 
E) none of the above 
A) ionic solid 
B) metallic solid 
C) molecular solid 
D) regular solid 
E) none of the above

Question 17

Complete the following chemical equation and indicate the product(s). SO₂(g)+ H₂O(l)→

Accepted Answer

A) H₂SO₃ 
B) H₂SO₄ 
C) H₂S + H₂O₂ 
D) SO₃ + H₂O₂ 
E) SO₃ + H₂ 
A) H₂SO₃ 
B) H₂SO₄ 
C) H₂S + H₂O₂ 
D) SO₃ + H₂O₂ 
E) SO₃ + H₂

Question 18

What is the product from the reaction of hydrogen and oxygen gases?

Accepted Answer

A) an acid 
B) a base 
C) a hydrate 
D) hydrogen peroxide 
E) water 
A) an acid 
B) a base 
C) a hydrate 
D) hydrogen peroxide 
E) water

Question 19

Calculate the heat released when 25.0 g of steam at 100.0 °C cools to ice at 0.0 °C.The specific heat of water is 1.00 cal/(g x °C);the heat of fusion is 80.0 cal/g;and the heat of vaporization is 540.0 cal/g.

Accepted Answer

A) 4.50 x 103 cal 
B) 1.35 x 104 cal 
C) 1.55 x 104 cal 
D) 1.60 x 104 cal 
E) 1.80 x 104 cal 
A) 4.50 x 103 cal 
B) 1.35 x 104 cal 
C) 1.55 x 104 cal 
D) 1.60 x 104 cal 
E) 1.80 x 104 cal

Question 20

What is the systematic name for CuSO₄ • 5H₂O?

Accepted Answer

A) copper sulfate hydrate 
B) copper sulfate pentahydrate 
C) copper(II)sulfate hydrate 
D) copper(II)sulfate dihydrate 
E) copper(II)sulfate pentahydrate 
A) copper sulfate hydrate 
B) copper sulfate pentahydrate 
C) copper(II)sulfate hydrate 
D) copper(II)sulfate dihydrate 
E) copper(II)sulfate pentahydrate

Exam 11: Liquids and Solids

Which of the following is true of a hydrogen bond in liquids?

What is the systematic name for MnSO₄ • H₂O?

Which of the following cations is found in soft water?

What is the term for an intermolecular attraction based on permanent dipoles involving a H atom bonded to an O or N atom?

Which of the following is an observed property of liquids?

What is the term for an attraction between two molecules with temporary dipoles?

Which of the following is true of the intermolecular attractions in liquids?

What is the experimentally observed bond angle in a water molecule?

A 73.6 g sample of aluminum is heated to 95.0 °C and dropped into 100.0 g of water at 20.0 °C.If the resulting temperature of the water is 30.0 °C,what is the specific heat of the metal?

What is the percentage of water in borax,Na₂B4O₇ • 10H₂O?

What is the strongest intermolecular force in a liquid containing molecules with H-O bonds?

What is the product from the reaction of water and a nonmetal oxide?

Which of the following explains why a needle can float on water?

Calculate the number of calories released when 25.0 g of water cools from 95.0 °C to 20.0 °C.The specific heat of water is 1.00 cal/(g x °C).

An unknown hydrate of calcium nitrate,Ca(NO₃)2 • XH₂O,is heated to give 30.5% water.What is the water of crystallization (X)for the hydrate?

What is the term for a crystalline solid composed of molecules which repeat in a regular pattern?

Complete the following chemical equation and indicate the product(s). SO₂(g)+ H₂O(l)→

What is the product from the reaction of hydrogen and oxygen gases?

Calculate the heat released when 25.0 g of steam at 100.0 °C cools to ice at 0.0 °C.The specific heat of water is 1.00 cal/(g x °C);the heat of fusion is 80.0 cal/g;and the heat of vaporization is 540.0 cal/g.

What is the systematic name for CuSO₄ • 5H₂O?

Introduction to Chemistry

The Metric System

Matter and Energy

Models of the Atom

The Periodic Table

Language of Chemistry

Chemical Reactions

The Mole Concept

Chemical Equation Calculations

Gases

Chemical Bonding

Solutions

Acids and Bases

Advanced Problem Solving

Chemical Equilibrium

Oxidation and Reduction

Nuclear Chemistry

Organic Chemistry

Biochemistry

Interlude: Prerequisite Science Skills

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