,Chapter j01: jIntroduction
1. A jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation jis jreferred jto jas
A) a jhypothesis. B) j a jlaw. C) j a jtheory.
D) jnone jof jthe jabove.jAns: j A Category: j Easy
Section: j1.2
2. A jconcise jverbal jor jmathematical jstatement jof ja jrelationship jbetween jphenomena
jthat jisjalways jthe jsame junder jthe jsame jconditions jis jreferred jto jas
A) a jhypothesis. B) j a jlaw. C) j a jtheory.
D) jnone jof jthe jabove.jAns: j B Category: j Easy
Section: j1.2
3. A junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations jis jreferred jto jas
A) a jhypothesis. B) j a jlaw. C) j a jtheory.
D) jnone jof jthe jabove.jAns: j C Category: j Easy
Section: j1.2
4. Complete jthe jfollowing jsentence. j A jhypothesis jis
A) a jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation.
B) a jstatement jdescribing ja jrelationship jbetween jphenomena jthat jis jalways jthe
jsamejunder jthe jsame jconditions.
C) a junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations.
D) a jmodel jused jto jvisualize jthe
jinvisible.jAns: j A Category:
j Easy Section: j 1.2
5. Complete jthe jfollowing jsentence. j A jscientific jlaw jis
A) a jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation.
B) a jstatement jdescribing ja jrelationship jbetween jphenomena jthat jis jalways jthe
jsamejunder jthe jsame jconditions.
C) a junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations.
D) a jmodel jused jto jvisualize jthe
jinvisible.jAns: j B Category:
j Easy Section: j 1.2
6. Complete jthe jfollowing jsentence. j A jtheory jis
A) a jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation.
B) a jstatement jdescribing ja jrelationship jbetween jphenomena jthat jis jalways jthe
jsamejunder jthe jsame jconditions.
C) a junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations.
D) a jmodel jused jto jvisualize jthe
jinvisible.jAns: j C Category:
j Easy Section: j 1.2
Page 1
, Chapter 01: Introduction
7. Choose jthe jresponse jthat jincludes jall jthe jitems jlisted jbelow jthat jare jpure jsubstances.
i. jorange jjuice ii. jsteam iii. jocean jwater iv. joxygen v. jvegetable jsoup
A) j i, jiii, jv B) j ii, jiv C) j i, jiii, jiv D) j iv jonly E) jall
jof jthem jare jpurejAns: j B Category: j Easy Section: j1.2
8. Which jof jthe jfollowing jis jan jexample jof ja jphysical jproperty?
A) corrosiveness jof jsulfuric jacid
B) toxicity jof jcyanide
C) flammability jof jgasoline
D) neutralization jof jstomach jacid jwith jan jantacid
E) lead jbecomes ja jliquid jwhen jheated jto
j601 C jAns: j E Category: j Easy
Section: j1.4
9. Which jone jof jthe jfollowing jis jan jexample jof ja jphysical jproperty?
A) dynamite jexplodes D) ice jfloats jon jtop jof jliquid jwater
B) meat jrots jif jit jis jnot jrefrigerated E) a jsilver jplatter jtarnishes
C) gasoline jburns
Ans: j D Category: j Easy Section: j 1.4
10. Which jone jof jthe jfollowing jrepresents ja jphysical jchange?
A) water, jwhen jheated jto j100 C, jforms jsteam
B) bleach jturns jhair jyellow
C) sugar, jwhen jheated, jbecomes jbrown
D) milk jturns jsour
E) apples, jwhen jexposed jto jair, jturn
jbrownjAns: j A Category:
j Easy Section: j 1.4
11. All jof jthe jfollowing jare jproperties jof jsodium. jWhich jone jis ja jphysical jproperty
jofjsodium?
A) It jis ja jsurface jturns jblack jwhen jfirst jexposed jto jair.
B) It jis ja jsolid jat j25 C jand jchanges jto ja jliquid jwhen jheated jto j98 C.
C) When jplaced jin jwater jit jsizzles jand ja jgas jis jformed.
D) When jplaced jin jcontact jwith jchlorine jit jforms ja jcompound jthat jmelts jat j801 C.
E) Sodium jis jnever jfound jas jthe jpure jmetal jin
jnature.jAns: j B Category: j Easy
Section: j1.4
12. All jof jthe jfollowing jare jproperties jof jtin. j Which jone jis ja jchemical jproperty jof jtin?
A) Tin jcan jbe jhammered jinto ja jthin jsheet.
B) At j–40 C ja jsheet jof jtin jcrumbles jto ja jgray jpowder.
C) Tin jmelts jat j231.9 C.
D) When ja jbar jof jtin jis jbent, jit jemits jan jaudible j―cry‖.
E) Tin jerodes jwhen jadded jto jhydrochloric jacid, jand ja jclear jgas
jforms.jAns: j E Category: j Medium Section: j1.4
Page 2
, Chapter 01: Introduction
13. Which jone jof jthe jfollowing jrepresents ja jchemical jchange?
A) boiling jwater jto jform jsteam
B) burning ja jpiece jof jcoal
C) heating jlead juntil jit jmelts
D) mixing jiron jfilings jand jsand jat jroom jtemperature
E) breaking jglass
Ans: j B Category: j Medium Section: j1.4
14. Which jof jthe jfollowing jdoes jnot jrepresent ja jchemical jchange?
A) a jfreshly jcut japple jturns jbrown
B) milk jturns jsour jon jstanding jat jroom jtemperature
C) when jcooled jto j0 C, jliquid jwater jbecomes jice
D) frying jan jegg
E) fermentation jof jsugar jto jalcohol
jAns: j C Category: j Easy Section:
j 1.4
The SI prefixes nano and deci represent, respectively:
15. 15.
A) 10– 9 and 10– 6. D) 109 and 10– 6.
–3
6
B) 10 and 10 . E) 10– 9 and 10– 1.
C) 103 and 10– 3.
Ans: E Category: Easy Section: 1.7
The SI prefixes milli and mega represent, respectively:
16. 16.
A) 106 and 10– 6. D) 10– 3 and 109.
B) 10– 3 and 106. E) 10– 6 and 10– 3.
3 –6
C) 10 and 10 .
Ans: B Category: Easy Section: 1.7
17. The jSI jprefixes jkilo jand jcenti jrepresent, jrespectively:
A) 103 jand j10– j2. D) 10– j6 j and j 102.
B) 106 jand j10– j1. E) 102 j and j 10– j3.
–3 –2
C) 10 j jand j10 j .
Ans: j A Category: j Easy Section: j 1.7
18. A jnanometer jcorresponds jto:
A) 10– j2 j meters. D) 10– j9 j meters.
–3
B) 10 j j meters. E) 10– j12 j meters.
C) 10– j6 j meters.
Ans: j D Category: j Easy Section: j 1.7
19. A jmicroliter jcorresponds jto:
A) 10– j2 j liters. B) j 10– j3 j liters. C) j 10– j6 jliters. D) j 10– j9 j liters. E) j10– j12
jliters.jAns: j C Category: j EasySection: j1.7
Page 3
1. A jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation jis jreferred jto jas
A) a jhypothesis. B) j a jlaw. C) j a jtheory.
D) jnone jof jthe jabove.jAns: j A Category: j Easy
Section: j1.2
2. A jconcise jverbal jor jmathematical jstatement jof ja jrelationship jbetween jphenomena
jthat jisjalways jthe jsame junder jthe jsame jconditions jis jreferred jto jas
A) a jhypothesis. B) j a jlaw. C) j a jtheory.
D) jnone jof jthe jabove.jAns: j B Category: j Easy
Section: j1.2
3. A junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations jis jreferred jto jas
A) a jhypothesis. B) j a jlaw. C) j a jtheory.
D) jnone jof jthe jabove.jAns: j C Category: j Easy
Section: j1.2
4. Complete jthe jfollowing jsentence. j A jhypothesis jis
A) a jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation.
B) a jstatement jdescribing ja jrelationship jbetween jphenomena jthat jis jalways jthe
jsamejunder jthe jsame jconditions.
C) a junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations.
D) a jmodel jused jto jvisualize jthe
jinvisible.jAns: j A Category:
j Easy Section: j 1.2
5. Complete jthe jfollowing jsentence. j A jscientific jlaw jis
A) a jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation.
B) a jstatement jdescribing ja jrelationship jbetween jphenomena jthat jis jalways jthe
jsamejunder jthe jsame jconditions.
C) a junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations.
D) a jmodel jused jto jvisualize jthe
jinvisible.jAns: j B Category:
j Easy Section: j 1.2
6. Complete jthe jfollowing jsentence. j A jtheory jis
A) a jtentative jexplanation jfor ja jset jof jobservations jthat jcan jbe jtested jby
jfurtherjexperimentation.
B) a jstatement jdescribing ja jrelationship jbetween jphenomena jthat jis jalways jthe
jsamejunder jthe jsame jconditions.
C) a junifying jprinciple jthat jexplains ja jbody jof jfacts jand jrelations.
D) a jmodel jused jto jvisualize jthe
jinvisible.jAns: j C Category:
j Easy Section: j 1.2
Page 1
, Chapter 01: Introduction
7. Choose jthe jresponse jthat jincludes jall jthe jitems jlisted jbelow jthat jare jpure jsubstances.
i. jorange jjuice ii. jsteam iii. jocean jwater iv. joxygen v. jvegetable jsoup
A) j i, jiii, jv B) j ii, jiv C) j i, jiii, jiv D) j iv jonly E) jall
jof jthem jare jpurejAns: j B Category: j Easy Section: j1.2
8. Which jof jthe jfollowing jis jan jexample jof ja jphysical jproperty?
A) corrosiveness jof jsulfuric jacid
B) toxicity jof jcyanide
C) flammability jof jgasoline
D) neutralization jof jstomach jacid jwith jan jantacid
E) lead jbecomes ja jliquid jwhen jheated jto
j601 C jAns: j E Category: j Easy
Section: j1.4
9. Which jone jof jthe jfollowing jis jan jexample jof ja jphysical jproperty?
A) dynamite jexplodes D) ice jfloats jon jtop jof jliquid jwater
B) meat jrots jif jit jis jnot jrefrigerated E) a jsilver jplatter jtarnishes
C) gasoline jburns
Ans: j D Category: j Easy Section: j 1.4
10. Which jone jof jthe jfollowing jrepresents ja jphysical jchange?
A) water, jwhen jheated jto j100 C, jforms jsteam
B) bleach jturns jhair jyellow
C) sugar, jwhen jheated, jbecomes jbrown
D) milk jturns jsour
E) apples, jwhen jexposed jto jair, jturn
jbrownjAns: j A Category:
j Easy Section: j 1.4
11. All jof jthe jfollowing jare jproperties jof jsodium. jWhich jone jis ja jphysical jproperty
jofjsodium?
A) It jis ja jsurface jturns jblack jwhen jfirst jexposed jto jair.
B) It jis ja jsolid jat j25 C jand jchanges jto ja jliquid jwhen jheated jto j98 C.
C) When jplaced jin jwater jit jsizzles jand ja jgas jis jformed.
D) When jplaced jin jcontact jwith jchlorine jit jforms ja jcompound jthat jmelts jat j801 C.
E) Sodium jis jnever jfound jas jthe jpure jmetal jin
jnature.jAns: j B Category: j Easy
Section: j1.4
12. All jof jthe jfollowing jare jproperties jof jtin. j Which jone jis ja jchemical jproperty jof jtin?
A) Tin jcan jbe jhammered jinto ja jthin jsheet.
B) At j–40 C ja jsheet jof jtin jcrumbles jto ja jgray jpowder.
C) Tin jmelts jat j231.9 C.
D) When ja jbar jof jtin jis jbent, jit jemits jan jaudible j―cry‖.
E) Tin jerodes jwhen jadded jto jhydrochloric jacid, jand ja jclear jgas
jforms.jAns: j E Category: j Medium Section: j1.4
Page 2
, Chapter 01: Introduction
13. Which jone jof jthe jfollowing jrepresents ja jchemical jchange?
A) boiling jwater jto jform jsteam
B) burning ja jpiece jof jcoal
C) heating jlead juntil jit jmelts
D) mixing jiron jfilings jand jsand jat jroom jtemperature
E) breaking jglass
Ans: j B Category: j Medium Section: j1.4
14. Which jof jthe jfollowing jdoes jnot jrepresent ja jchemical jchange?
A) a jfreshly jcut japple jturns jbrown
B) milk jturns jsour jon jstanding jat jroom jtemperature
C) when jcooled jto j0 C, jliquid jwater jbecomes jice
D) frying jan jegg
E) fermentation jof jsugar jto jalcohol
jAns: j C Category: j Easy Section:
j 1.4
The SI prefixes nano and deci represent, respectively:
15. 15.
A) 10– 9 and 10– 6. D) 109 and 10– 6.
–3
6
B) 10 and 10 . E) 10– 9 and 10– 1.
C) 103 and 10– 3.
Ans: E Category: Easy Section: 1.7
The SI prefixes milli and mega represent, respectively:
16. 16.
A) 106 and 10– 6. D) 10– 3 and 109.
B) 10– 3 and 106. E) 10– 6 and 10– 3.
3 –6
C) 10 and 10 .
Ans: B Category: Easy Section: 1.7
17. The jSI jprefixes jkilo jand jcenti jrepresent, jrespectively:
A) 103 jand j10– j2. D) 10– j6 j and j 102.
B) 106 jand j10– j1. E) 102 j and j 10– j3.
–3 –2
C) 10 j jand j10 j .
Ans: j A Category: j Easy Section: j 1.7
18. A jnanometer jcorresponds jto:
A) 10– j2 j meters. D) 10– j9 j meters.
–3
B) 10 j j meters. E) 10– j12 j meters.
C) 10– j6 j meters.
Ans: j D Category: j Easy Section: j 1.7
19. A jmicroliter jcorresponds jto:
A) 10– j2 j liters. B) j 10– j3 j liters. C) j 10– j6 jliters. D) j 10– j9 j liters. E) j10– j12
jliters.jAns: j C Category: j EasySection: j1.7
Page 3
