TEST BANK FOR General Chemistry: The Essential Concepts 7th Edition by Raymond Chang , Kenneth Goldsby ISBN:978-0073402758 ALL CHAPTERS COVERED YOUR ULTIMATE GUIDE 100% VERIFIED A+ GRADE ASSURED!!!!!!!! NEW LATEST UPDATE!!!!!!!!!!

,Chapter 01: Introduction
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1. A tentative explanation for a set of observations that can be tested by furt
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her experimentation is referred to as
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A) a hypothesis. B) a law. C) a theory.
JK J K JK J K JK


D) none of the above. Ans: A
J K Category: Easy
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Section: 1.2 J K




2. A concise verbal or mathematical statement of a relationship between phenomena tha
JK JK JK JK JK JK JK JK JK JK JK


t is always the same under the same conditions is referred to as
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A) a hypothesis. B) a law.
JK C) a theory. J K JK J K JK


D) none of the above. Ans: B
J K Category: Easy
JK JK JK JK J K J K


Section: 1.2 J K




3. A unifying principle that explains a body of facts and relations is referred to as
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A) a hypothesis. B) a law.
JK C) a theory. J K JK J K JK


D) none of the above. Ans: C
J K Category: Easy
JK JK JK JK J K J K


Section: 1.2 J K




4. Complete the following sentence. A hypothesis is
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A) a tentative explanation for a set of observations that can be tested by furt
JK JK JK JK JK JK JK JK JK JK JK JK JK


her experimentation. JK


B) a statement describing a relationship between phenomena that is always the sa
JK JK JK JK JK JK JK JK JK JK JK


me under the same conditions.
JK JK JK JK


C) a unifying principle that explains a body of facts and relations.
JK JK JK JK JK JK JK JK JK JK


D) a model used to visualize the invisibl
JK JK JK JK JK JK


e. Ans: A
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Category: Easy Section: 1.2 J K J K




5. Complete the following sentence. A scientific law is
JK JK JK J K JK JK JK


A) a tentative explanation for a set of observations that can be tested by furt
JK JK JK JK JK JK JK JK JK JK JK JK JK


her experimentation. JK


B) a statement describing a relationship between phenomena that is always the sa
JK JK JK JK JK JK JK JK JK JK JK


me under the same conditions.
JK JK JK JK


C) a unifying principle that explains a body of facts and relations.
JK JK JK JK JK JK JK JK JK JK


D) a model used to visualize the invisibl
JK JK JK JK JK JK


e. Ans: B
JK J K


Category: Easy Section: 1.2 J K J K




6. Complete the following sentence. A theory is
JK JK JK J K JK JK


A) a tentative explanation for a set of observations that can be tested by furt
JK JK JK JK JK JK JK JK JK JK JK JK JK


her experimentation. JK


B) a statement describing a relationship between phenomena that is always the sa
JK JK JK JK JK JK JK JK JK JK JK


me under the same conditions.
JK JK JK JK


C) a unifying principle that explains a body of facts and relations.
JK JK JK JK JK JK JK JK JK JK


D) a model used to visualize the invisibl
JK JK JK JK JK JK


e. Ans: C
JK J K


Category: Easy Section: 1.2 J K J K


Page 1 JK

, Chapter 01: Introductio JK JK

n

7. Choose the response that includes all the items listed below that are pure substances.
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i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup
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A) i, iii, v
J K JK B) ii, iv C) i, iii, iv D) iv only
JK J K JK J K JK JK J K JK


E) all of them are pure Ans: B Category: Easy
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Section: 1.2 J K




8. Which of the following is an example of a physical property?
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A) corrosiveness of sulfuric acid JK JK JK


B) toxicity of cyanide JK JK


C) flammability of gasoline JK JK


D) neutralization of stomach acid with an antacid JK JK JK JK JK JK


E) lead becomes a liquid when heated to 601
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C Ans: E Category: Easy Section: 1.4
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9. Which one of the following is an example of a physical property?
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A) dynamite explodes D) ice floats on top of liquid water
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B) meat rots if it is not refrigerated E)JK a silver platter tarnishes
JK JK JK JK JK JK JK JK


C) gasoline burns JK


Ans: D Category: Easy Section: 1.4
J K J K J K




10. Which one of the following represents a physical change?
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A) water, when heated to 100 C, forms steam JK JK JK JK JK JK


B) bleach turns hair yellow JK JK JK


C) sugar, when heated, becomes brown JK JK JK JK


D) milk turns sour JK JK


E) apples, when exposed to air, turn brow JK JK JK JK JK JK


n Ans: A Category: Easy Section: 1.4
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11. All of the following are properties of sodium. Which one is a physical propert
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y of sodium?
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A) It is a surface turns black when first exposed to air.
JK JK JK JK JK JK JK JK JK JK


B) It is a solid at 25 C and changes to a liquid when heated to 98 C.
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C) When placed in water it sizzles and a gas is formed.
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D) When placed in contact with chlorine it forms a compound that melts at 801 C.
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E) Sodium is never found as the pure metal in natu JK JK JK JK JK JK JK JK JK


re. Ans: B
JK Category: Easy
J K J K


Section: 1.4 J K




12. All of the following are properties of tin. Which one is a chemical property of tin?
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A) Tin can be hammered into a thin sheet.
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B) At –40 C a sheet of tin crumbles to a gray powder.
JK JK JK JK JK JK JK JK JK JK


C) Tin melts at 231.9 C. JK JK JK


D) When a bar of tin is bent, it emits an audible “cry”.
JK JK JK JK JK JK JK JK JK JK JK


E) Tin erodes when added to hydrochloric acid, and a clear gas for
JK JK JK JK JK JK JK JK JK JK JK


ms. Ans: E JK Category: Medium
J K Section: 1.4 J K J K




Page 2 JK

, Chapter 01: Introductio
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n

13. Which one of the following represents a chemical change?
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A) boiling water to form steam JK JK JK JK


B) burning a piece of coal JK JK JK JK


C) heating lead until it melts JK JK JK JK


D) mixing iron filings and sand at room temperature JK JK JK JK JK JK JK


E) breaking glass JK


Ans: B Category: Medium Section: 1.4
J K J K J K




14. Which of the following does not represent a chemical change?
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A) a freshly cut apple turns brown
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B) milk turns sour on standing at room temperature
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C) when cooled to 0 C, liquid water becomes ice
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D) frying an egg JK JK


E) fermentation of sugar to alcohol A JK JK JK JK JK


ns: C Category: Easy
J K J K


Section: 1.4 JK




15. The SI prefixes nano and deci represent, respectively:
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A) 10– 9 and 10– 6. JK JK D) 109 and 10– 6. JK JK JK JK JK

–3
6
B) 10 and 10 . JK E) 10– 9 and 10– 1.
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C) 103 and 10– 3. JK JK JK


Ans: E Category: Easy Section: 1.7
J K J K




16. The SI prefixes milli and mega represent, respectively:
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A) 106 and 10– 6. JK D) 10– 3 and 109.
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B) 10– 3 and 106. JK JK E) 10– 6 and 10– 3.
JK JK JK JK JK

3 –6
C) 10 and 10 . JK JK JK


Ans: B Category: Easy Section: 1.7
J K J K




17. The SI prefixes kilo and centi represent, respectively:
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A) 103 and 10– 2. JK D) 10– 6 and 102.
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B) 106 and 10– 1. JK E) 102 and 10– 3.
JK JK JK JK JK

–3 –2
C) 10 and 10 . JK JK JK JK


Ans: A Category: Easy Section: 1.7
J K




18. A nanometer corresponds to:
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A) 10– 2 meters. D)
JK JK 10– 9 meters.
JK JK

–3
B) 10 meters. E)
JK JK 10– 12 meters.
JK JK


C) 10– 6 meters. JK JK


Ans: D Category: Easy Section: 1.7
J K J K J K




19. A microliter corresponds to:
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A) 10– 2 liters. B) 10– 3 liters. C) 10– 6 liters. D) 10– 9 liters. E) 10–
JK JK J K JK JK J K JK JK J K JK JK JK

12
JK liters. Ans: C
JK Category: Easy
JK Section: 1.7
J K J K J K




Page 3 JK