General Chemistry The Essential Concept 7Th Edition Raymond By Chang - Test Bank

,Chapter 01: Introduction
8 8



1. A8tentative8explanation8for8a8set8of8observations8that8can8be8tested8by8furth
er8experimentation8is8referred8to8as
A) a8hypothesis. B)8 a8law. C)8 a8theory.
D)8 none8of8the8above.8Ans:8 A Category:8 Easy
Section:8 1.2

2. A8concise8verbal8or8mathematical8statement8of8a8relationship8between8phenomena8that8i
s8always8the8same8under8the8same8conditions8is8referred8to8as
A) a8hypothesis. B)8 a8law. C)8 a8theory.
D)8 none8of8the8above.8Ans:8 B Category:8 Easy
Section:8 1.2

3. A8unifying8principle8that8explains8a8body8of8facts8and8relations8is8referred8to8as
A) a8hypothesis. B)8 a8law. C)8 a8theory.
D)8 none8of8the8above.8Ans:8 C Category:8 Easy
Section:8 1.2

4. Complete8the8following8sentence.8 A8hypothesis8is
A) a8tentative8explanation8for8a8set8of8observations8that8can8be8tested8by8furth
er8experimentation.
B) a8statement8describing8a8relationship8between8phenomena8that8is8always8the8sam
e8under8the8same8conditions.
C) a8unifying8principle8that8explains8a8body8of8facts8and8relations.
D) a8model8used8to8visualize8the8invisible
.8Ans:8 A Category:8 Easy Section:8 1.2

5. Complete8the8following8sentence.8 A8scientific8law8is
A) a8tentative8explanation8for8a8set8of8observations8that8can8be8tested8by8furth
er8experimentation.
B) a8statement8describing8a8relationship8between8phenomena8that8is8always8the8sam
e8under8the8same8conditions.
C) a8unifying8principle8that8explains8a8body8of8facts8and8relations.
D) a8model8used8to8visualize8the8invisible
.8Ans:8 B Category:8 Easy Section:8 1.2

6. Complete8the8following8sentence.8 A8theory8is
A) a8tentative8explanation8for8a8set8of8observations8that8can8be8tested8by8furth
er8experimentation.
B) a8statement8describing8a8relationship8between8phenomena8that8is8always8the8sam
e8under8the8same8conditions.
C) a8unifying8principle8that8explains8a8body8of8facts8and8relations.
D) a8model8used8to8visualize8the8invisible
.8Ans:8 C Category:8 Easy Section:8 1.2



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, Chapter801:8Introduction


7. Choose8the8response8that8includes8all8the8items8listed8below8that8are8pure8substances.
i.8orange8juice ii.8steam iii.8ocean8water iv.8oxygen v.8vegetable8soup
A)8 i,8iii,8v B)8 ii,8iv C)8 i,8iii,8iv D)8 iv8only
E)8 all8of8them8are8pure8Ans:8 B Category:8 Easy
Section:8 1.2

8. Which8of8the8following8is8an8example8of8a8physical8property?
A) corrosiveness8of8sulfuric8acid
B) toxicity8of8cyanide
C) flammability8of8gasoline
D) neutralization8of8stomach8acid8with8an8antacid
E) lead8becomes8a8liquid8when8heated8to8601 C
8Ans:8 E Category:8 Easy Section:8 1.4

9. Which8one8of8the8following8is8an8example8of8a8physical8property?
A) dynamite8explodes D) ice8floats8on8top8of8liquid8water
B) meat8rots8if8it8is8not8refrigerated E) a8silver8platter8tarnishes
C) gasoline8burns
Ans:8 D Category:8 Easy Section:8 1.4

10. Which8one8of8the8following8represents8a8physical8change?
A) water,8when8heated8to8100 C,8forms8steam
B) bleach8turns8hair8yellow
C) sugar,8when8heated,8becomes8brown
D) milk8turns8sour
E) apples,8when8exposed8to8air,8turn8brow
n8Ans:8 A Category:8 Easy Section:8 1.4

11. All8of8the8following8are8properties8of8sodium.8 Which8one8is8a8physical8property8o
f8sodium?
A) It8is8a8surface8turns8black8when8first8exposed8to8air.
B) It8is8a8solid8at825 C8and8changes8to8a8liquid8when8heated8to898 C.
C) When8placed8in8water8it8sizzles8and8a8gas8is8formed.
D) When8placed8in8contact8with8chlorine8it8forms8a8compound8that8melts8at8801 C.
E) Sodium8is8never8found8as8the8pure8metal8in8nature
.8Ans:8 B Category:8 Easy Section:8 1.4

12. All8of8the8following8are8properties8of8tin.8 Which8one8is8a8chemical8property8of8tin?
A) Tin8can8be8hammered8into8a8thin8sheet.
B) At8–40 C8a8sheet8of8tin8crumbles8to8a8gray8powder.
C) Tin8melts8at8231.9 C.
D) When8a8bar8of8tin8is8bent,8it8emits8an8audible8―cry‖.
E) Tin8erodes8when8added8to8hydrochloric8acid,8and8a8clear8gas8form
s.8Ans:8 E Category:8 Medium Section:8 1.4




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, Chapter801:8Introduction


13. Which8one8of8the8following8represents8a8chemical8change?
A) boiling8water8to8form8steam
B) burning8a8piece8of8coal
C) heating8lead8until8it8melts
D) mixing8iron8filings8and8sand8at8room8temperature
E) breaking8glass
Ans:8 B Category:8 Medium Section:8 1.4

14. Which8of8the8following8does8not8represent8a8chemical8change?
A) a8freshly8cut8apple8turns8brown
B) milk8turns8sour8on8standing8at8room8temperature
C) when8cooled8to80 C,8liquid8water8becomes8ice
D) frying8an8egg
E) fermentation8of8sugar8to8alcohol8An
s:8 C Category:8 Easy Section:8 1.4

15. The8SI8prefixes8nano8and8deci8represent,8respectively:
A) 10–898and810–86. D) 1098and810–86.
B) 1068and810–83. E) 10–898and810–81.
3 –3
C) 10 8and810 8 .
Ans:8 E Category: Easy Section:8 1.7

16. The8SI8prefixes8milli8and8mega8represent,8respectively:
A) 1068and810–86. D) 10–838and8109.
–3
B) 10 8 8and810 .6
E) 10–868and810–83.
C) 1038and810–86.
Ans:8 B Category: Easy Section:8 1.7

17. The8SI8prefixes8kilo8and8centi8represent,8respectively:
A) 1038and810–82. D) 10–868and8102.
B) 1068and810–81. E) 1028and810–83.
–3 –2
C) 10 8 8and810 8 .
Ans:8 A Category: Easy Section: 1.7

18. A8nanometer8corresponds8to:
A) 10–828meters. D) 10–898meters.
B) 10–838meters. E) 10–8128meters.
–6
C) 10 8 8meters.
Ans:8 D Category:8 Easy Section:8 1.7

19. A8microliter8corresponds8to:
A) 10–828liters. B)8 10–838liters. C)8 10–868liters. D)8 10–898liters. E)8 10–
12
8 8liters.8Ans:8 C Category:8 Easy Section:8 1.7




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