Question 1

A hydrate of sodium acetate is heated to give 39.7% water.What is the chemical formula for the hydrate?

Accepted Answer

A) Na₂CO₃ • H₂O 
B) Na₂CO₃ • 3H₂O 
C) NaC₂H₃O₂ • H₂O 
D) NaC₂H₃O₂ • 3H₂O 
E) Na₂C₂O₄ • 2H₂O 
A) Na₂CO₃ • H₂O 
B) Na₂CO₃ • 3H₂O 
C) NaC₂H₃O₂ • H₂O 
D) NaC₂H₃O₂ • 3H₂O 
E) Na₂C₂O₄ • 2H₂O

Question 2

Which of the following anions is found in deionized water?

Accepted Answer

A) Cl- 
B) CO₃2- 
C) SO₄2- 
D) PO₄3- 
E) none of the above 
A) Cl- 
B) CO₃2- 
C) SO₄2- 
D) PO₄3- 
E) none of the above

Question 3

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

Accepted Answer

A) Zn(OH)2 
B) Zn(OH)2 + H₂ 
C) Zn(OH)2 + O₂ 
D) Zn(OH)2 + O₃ 
E) Zn(OH)2 + H₂O₂ 
A) Zn(OH)2 
B) Zn(OH)2 + H₂ 
C) Zn(OH)2 + O₂ 
D) Zn(OH)2 + O₃ 
E) Zn(OH)2 + H₂O₂

Question 4

Which of the following describes a molecular solid conceptually?

Accepted Answer

A) Molecules are in fixed positions. 
B) Molecules are attracted to each other. 
C) Molecules form regular or random patterns. 
D) Molecules are in contact with each other. 
E) all of the above 
A) Molecules are in fixed positions. 
B) Molecules are attracted to each other. 
C) Molecules form regular or random patterns. 
D) Molecules are in contact with each other. 
E) all of the above

Question 5

What is the term for the chemical reaction produced from passing electrical current through an aqueous solution?

Accepted Answer

A) decomposition 
B) deionization 
C) distillation 
D) electrolysis 
E) none of the above 
A) decomposition 
B) deionization 
C) distillation 
D) electrolysis 
E) none of the above

Question 6

What is the term for a compound which reacts with water to produce a basic solution?

Accepted Answer

A) anhydrous 
B) hydrate 
C) metal oxide 
D) nonmetal oxide 
E) none of the above 
A) anhydrous 
B) hydrate 
C) metal oxide 
D) nonmetal oxide 
E) none of the above

Question 7

Which of the following is an example of a molecular crystalline solid?

Accepted Answer

A) dry ice,CO₂ 
B) fluorite,CaF2 
C) marble,CaCO₃ 
D) iron pyrite,FeS₂ 
E) none of the above 
A) dry ice,CO₂ 
B) fluorite,CaF2 
C) marble,CaCO₃ 
D) iron pyrite,FeS₂ 
E) none of the above

Question 8

Complete the following chemical reaction and indicate the products. CoSO₄ • H₂O(s)

Accepted Answer

A) CoSO₃ and H₂ 
B) CoSO₄ and H₂ 
C) CoSO₃ and H₂O 
D) CoSO₄ and H₂O 
E) CoSO₄,H₂,and O₂ 
A) CoSO₃ and H₂ 
B) CoSO₄ and H₂ 
C) CoSO₃ and H₂O 
D) CoSO₄ and H₂O 
E) CoSO₄,H₂,and O₂

Question 9

An unknown hydrate of cobalt(II)cyanide,Co(CN)2 • XH₂O,is heated to give 32.7% 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 10

What is the term for a compound which contains a specific number of water molecules in a crystalline compound?

Accepted Answer

A) anhydrous 
B) deliquescent 
C) efflorescent 
D) hydrate 
E) none of the above 
A) anhydrous 
B) deliquescent 
C) efflorescent 
D) hydrate 
E) none of the above

Question 11

Which physical state is described by the following analogy? A beaker of marbles is covered with honey.When shaken,the marbles
Move about slowly and randomly as they overcome their stickiness.

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) all of the above 
E) none of the above 
A) solid 
B) liquid 
C) gas 
D) all of the above 
E) none of the above

Question 12

Which of the following cations is found in hard 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 13

What is the percentage of water in CoCl₂ • 6H₂O?

Accepted Answer

A) 7.57% 
B) 12.2% 
C) 13.9% 
D) 45.4% 
E) 83.1% 
A) 7.57% 
B) 12.2% 
C) 13.9% 
D) 45.4% 
E) 83.1%

Question 14

What is the term for a substance in the solid state that contains particles which repeat in a regular geometric pattern?

Accepted Answer

A) crystalline solid 
B) geometric solid 
C) noncrystalline solid 
D) regular solid 
E) none of the above 
A) crystalline solid 
B) geometric solid 
C) noncrystalline solid 
D) regular solid 
E) none of the above

Question 15

Which of the following is an observed property of solids?

Accepted Answer

A) Solids have a variable shape and fixed volume. 
B) Solids can have noncrystalline structures. 
C) Solids compress and expand significantly. 
D) Solids are usually less dense than liquids. 
E) none of the above 
A) Solids have a variable shape and fixed volume. 
B) Solids can have noncrystalline structures. 
C) Solids compress and expand significantly. 
D) Solids are usually less dense than liquids. 
E) none of the above

Question 16

What is found in tap water that is not found in bottled water?

Accepted Answer

A) Tap water contains air. 
B) Tap water contains carbonation. 
C) Tap water contains chlorine. 
D) Tap water contains fluoride. 
E) Tap water contains minerals. 
A) Tap water contains air. 
B) Tap water contains carbonation. 
C) Tap water contains chlorine. 
D) Tap water contains fluoride. 
E) Tap water contains minerals.

Question 17

What is the term for an attraction between two molecules with permanent 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 18

Calculate the heat released when 25.0 g of steam at 100 °C condenses to a liquid at 100 °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) 3.20 cal 
B) 21.6 cal 
C) 25.0 cal 
D) 2.00 x 103 cal 
E) 1.35 x 104 cal 
A) 3.20 cal 
B) 21.6 cal 
C) 25.0 cal 
D) 2.00 x 103 cal 
E) 1.35 x 104 cal

Question 19

Which of the following types of crystalline solids have metal atoms arranged in regular geometric patterns?

Accepted Answer

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

Question 20

The vapor pressure of acetone is 1 torr at -59 °C;100 torr at 8 °C;400 torr at 40 °C;760 torr at 56 °C;1520 torr at 79 °C.What is the normal boiling point of acetone?

Accepted Answer

A) -59 °C 
B) 8 °C 
C) 40 °C 
D) 56 °C 
E) 79 °C 
A) -59 °C 
B) 8 °C 
C) 40 °C 
D) 56 °C 
E) 79 °C

Exam 11: Liquids and Solids

A hydrate of sodium acetate is heated to give 39.7% water.What is the chemical formula for the hydrate?

Which of the following anions is found in deionized water?

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

Which of the following describes a molecular solid conceptually?

What is the term for the chemical reaction produced from passing electrical current through an aqueous solution?

What is the term for a compound which reacts with water to produce a basic solution?

Which of the following is an example of a molecular crystalline solid?

Complete the following chemical reaction and indicate the products. CoSO₄ • H₂O(s)

An unknown hydrate of cobalt(II)cyanide,Co(CN)2 • XH₂O,is heated to give 32.7% water.What is the water of crystallization (X)for the hydrate?

What is the term for a compound which contains a specific number of water molecules in a crystalline compound?

Which physical state is described by the following analogy? A beaker of marbles is covered with honey.When shaken,the marbles Move about slowly and randomly as they overcome their stickiness.

Which of the following cations is found in hard water?

What is the percentage of water in CoCl₂ • 6H₂O?

What is the term for a substance in the solid state that contains particles which repeat in a regular geometric pattern?

Which of the following is an observed property of solids?

What is found in tap water that is not found in bottled water?

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

Calculate the heat released when 25.0 g of steam at 100 °C condenses to a liquid at 100 °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.

Which of the following types of crystalline solids have metal atoms arranged in regular geometric patterns?

The vapor pressure of acetone is 1 torr at -59 °C;100 torr at 8 °C;400 torr at 40 °C;760 torr at 56 °C;1520 torr at 79 °C.What is the normal boiling point of acetone?

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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