,Chapter 01: Introduction
h h
1. A htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation his hreferred hto has
A) a hhypothesis. B) h a hlaw. C) h a htheory. D) h none hof hthe
habove. hAns: h A Category: h Easy Section: h 1.2
2. A hconcise hverbal hor hmathematical hstatement hof ha hrelationship hbetween hphenomena hthat
his halways hthe hsame hunder hthe hsame hconditions his hreferred hto has
A) a hhypothesis. B) h a hlaw. C) h a htheory. D) h none hof hthe
habove. hAns: h B Category: h Easy Section: h 1.2
3. A hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations his hreferred hto has
A) a hhypothesis. B) h a hlaw. C) h a htheory. D) h none hof hthe
habove. hAns: h C Category: h Easy Section: h 1.2
4. Complete hthe hfollowing hsentence. h A hhypothesis his
A) a htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation.
B) a hstatement hdescribing ha hrelationship hbetween hphenomena hthat his halways hthe
hsame hunder hthe hsame hconditions.
C) a hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations.
D) a hmodel hused hto hvisualize hthe
hinvisible. hAns: h A Category:
h Easy Section: h 1.2
5. Complete hthe hfollowing hsentence. h A hscientific hlaw his
A) a htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation.
B) a hstatement hdescribing ha hrelationship hbetween hphenomena hthat his halways hthe
hsame hunder hthe hsame hconditions.
C) a hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations.
D) a hmodel hused hto hvisualize hthe
hinvisible. hAns: h B Category:
h Easy Section: h 1.2
6. Complete hthe hfollowing hsentence. h A htheory his
A) a htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation.
B) a hstatement hdescribing ha hrelationship hbetween hphenomena hthat his halways hthe
hsame hunder hthe hsame hconditions.
C) a hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations.
D) a hmodel hused hto hvisualize hthe
hinvisible. hAns: h C Category:
h Easy Section: h 1.2
Page h1
, Chapter h01: hIntroduction
7. Choose hthe hresponse hthat hincludes hall hthe hitems hlisted hbelow hthat hare hpure hsubstances.
i. horange hjuice ii. hsteam iii. hocean hwater iv. hoxygen v. hvegetable hsoup
A) h i, hiii, hv B) h ii, hiv C) h i, hiii, hiv D) h iv honly E) h all
hof hthem hare hpure hAns: h B Category: h Easy Section: h 1.2
8. Which hof hthe hfollowing his han hexample hof ha hphysical hproperty?
A) corrosiveness hof hsulfuric hacid
B) toxicity hof hcyanide
C) flammability hof hgasoline
D) neutralization hof hstomach hacid hwith han hantacid
E) lead hbecomes ha hliquid hwhen hheated hto h601 C
hAns: h E Category: h Easy Section: h 1.4
9. Which hone hof hthe hfollowing his han hexample hof ha hphysical hproperty?
A) dynamite hexplodes D) ice hfloats hon htop hof hliquid hwater
B) meat hrots hif hit his hnot hrefrigerated E) a hsilver hplatter htarnishes
C) gasoline hburns
Ans: h D Category: h Easy Section: h 1.4
10. Which hone hof hthe hfollowing hrepresents ha hphysical hchange?
A) water, hwhen hheated hto h100 C, hforms hsteam
B) bleach hturns hhair hyellow
C) sugar, hwhen hheated, hbecomes hbrown
D) milk hturns hsour
E) apples, hwhen hexposed hto hair, hturn
hbrown hAns: h A Category:
h Easy Section: h 1.4
11. All hof hthe hfollowing hare hproperties hof hsodium. h Which hone his ha hphysical hproperty
hof hsodium?
A) It his ha hsurface hturns hblack hwhen hfirst hexposed hto hair.
B) It his hahsolid hat h25 C hand hchanges htoha hliquid hwhen hheated hto h98 C.
C) When hplaced hin hwater hit hsizzles hand ha hgas his hformed.
D) When hplaced hin hcontact hwith hchlorine hit hforms ha hcompound hthat hmelts hat h801 C.
E) Sodium his hnever hfound has hthe hpure hmetal hin
hnature. hAns: h B Category: h Easy
Section: h 1.4
12. All hof hthe hfollowing hare hproperties hof htin. h Which hone his ha hchemical hproperty hof htin?
A) Tin hcan hbe hhammered hinto ha hthin hsheet.
B) At h–40 C hahsheet hof htinhcrumbles hto hahgrayhpowder.
C) Tin hmelts hat h231.9 C.
D) When ha hbar hof htin his hbent, hit hemits han haudible h―cry‖.
E) Tin herodes hwhen hadded hto hhydrochloric hacid, hand ha hclear hgas
hforms. hAns: h E Category: h Medium Section: h 1.4
Page h2
, Chapter h01: hIntroduction
13. Which hone hof hthe hfollowing hrepresents ha hchemical hchange?
A) boiling hwater hto hform hsteam
B) burning ha hpiece hof hcoal
C) heating hlead huntil hit hmelts
D) mixing hiron hfilings hand hsand hat hroom htemperature
E) breaking hglass
Ans: h B Category: h Medium Section: h 1.4
14. Which hof hthe hfollowing hdoes hnot hrepresent ha hchemical hchange?
A) a hfreshly hcut happle hturns hbrown
B) milk hturns hsour hon hstanding hat hroom htemperature
C) when hcooled hto h0 C, hliquid hwater hbecomes hice
D) frying han hegg
E) fermentation hof hsugar hto halcohol
hAns: h C Category: h Easy Section: h 1.4
15. The hSI hprefixes hnano hand hdeci hrepresent, hrespectively:
A) 10–h9 hand h10–h6. D) 109 hand h10–h6.
B) 106 hand h10–h3. E) 10–h9 hand h10–h1.
3 –3
C) 10 hand h10 h .
Ans: h E Category: Easy Section: h 1.7
16. The hSI hprefixes hmilli hand hmega hrepresent, hrespectively:
A) 106 hand h10–h6. D) 10–h3 hand h109.
–3
B) 10 h hand h10 . 6
E) 10–h6 hand h10–h3.
C) 103 hand h10–h6.
Ans: h B Category: Easy Section: h 1.7
17. The hSI hprefixes hkilo hand hcenti hrepresent, hrespectively:
A) 103 hand h10–h2. D) 10–h6 hand h102.
B) 106 hand h10–h1. E) 102 hand h10–h3.
–3 –2
C) 10 h hand h10 h .
Ans: h A Category: Easy Section: 1.7
18. A hnanometer hcorresponds hto:
A) 10–h2 hmeters. D) 10–h9 hmeters.
B) 10–h3 hmeters. E) 10–h12 hmeters.
–6
C) 10 h hmeters.
Ans: h D Category: h Easy Section: h 1.7
19. A hmicroliter hcorresponds hto:
A) 10– h2 hliters. B) h 10– h3 hliters. C) h 10– h6 hliters. D) h 10– h9 hliters. E) h 10–h12 hliters.
hAns: h C Category: h Easy Section: h 1.7
Page h3
h h
1. A htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation his hreferred hto has
A) a hhypothesis. B) h a hlaw. C) h a htheory. D) h none hof hthe
habove. hAns: h A Category: h Easy Section: h 1.2
2. A hconcise hverbal hor hmathematical hstatement hof ha hrelationship hbetween hphenomena hthat
his halways hthe hsame hunder hthe hsame hconditions his hreferred hto has
A) a hhypothesis. B) h a hlaw. C) h a htheory. D) h none hof hthe
habove. hAns: h B Category: h Easy Section: h 1.2
3. A hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations his hreferred hto has
A) a hhypothesis. B) h a hlaw. C) h a htheory. D) h none hof hthe
habove. hAns: h C Category: h Easy Section: h 1.2
4. Complete hthe hfollowing hsentence. h A hhypothesis his
A) a htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation.
B) a hstatement hdescribing ha hrelationship hbetween hphenomena hthat his halways hthe
hsame hunder hthe hsame hconditions.
C) a hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations.
D) a hmodel hused hto hvisualize hthe
hinvisible. hAns: h A Category:
h Easy Section: h 1.2
5. Complete hthe hfollowing hsentence. h A hscientific hlaw his
A) a htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation.
B) a hstatement hdescribing ha hrelationship hbetween hphenomena hthat his halways hthe
hsame hunder hthe hsame hconditions.
C) a hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations.
D) a hmodel hused hto hvisualize hthe
hinvisible. hAns: h B Category:
h Easy Section: h 1.2
6. Complete hthe hfollowing hsentence. h A htheory his
A) a htentative hexplanation hfor ha hset hof hobservations hthat hcan hbe htested hby
hfurther hexperimentation.
B) a hstatement hdescribing ha hrelationship hbetween hphenomena hthat his halways hthe
hsame hunder hthe hsame hconditions.
C) a hunifying hprinciple hthat hexplains ha hbody hof hfacts hand hrelations.
D) a hmodel hused hto hvisualize hthe
hinvisible. hAns: h C Category:
h Easy Section: h 1.2
Page h1
, Chapter h01: hIntroduction
7. Choose hthe hresponse hthat hincludes hall hthe hitems hlisted hbelow hthat hare hpure hsubstances.
i. horange hjuice ii. hsteam iii. hocean hwater iv. hoxygen v. hvegetable hsoup
A) h i, hiii, hv B) h ii, hiv C) h i, hiii, hiv D) h iv honly E) h all
hof hthem hare hpure hAns: h B Category: h Easy Section: h 1.2
8. Which hof hthe hfollowing his han hexample hof ha hphysical hproperty?
A) corrosiveness hof hsulfuric hacid
B) toxicity hof hcyanide
C) flammability hof hgasoline
D) neutralization hof hstomach hacid hwith han hantacid
E) lead hbecomes ha hliquid hwhen hheated hto h601 C
hAns: h E Category: h Easy Section: h 1.4
9. Which hone hof hthe hfollowing his han hexample hof ha hphysical hproperty?
A) dynamite hexplodes D) ice hfloats hon htop hof hliquid hwater
B) meat hrots hif hit his hnot hrefrigerated E) a hsilver hplatter htarnishes
C) gasoline hburns
Ans: h D Category: h Easy Section: h 1.4
10. Which hone hof hthe hfollowing hrepresents ha hphysical hchange?
A) water, hwhen hheated hto h100 C, hforms hsteam
B) bleach hturns hhair hyellow
C) sugar, hwhen hheated, hbecomes hbrown
D) milk hturns hsour
E) apples, hwhen hexposed hto hair, hturn
hbrown hAns: h A Category:
h Easy Section: h 1.4
11. All hof hthe hfollowing hare hproperties hof hsodium. h Which hone his ha hphysical hproperty
hof hsodium?
A) It his ha hsurface hturns hblack hwhen hfirst hexposed hto hair.
B) It his hahsolid hat h25 C hand hchanges htoha hliquid hwhen hheated hto h98 C.
C) When hplaced hin hwater hit hsizzles hand ha hgas his hformed.
D) When hplaced hin hcontact hwith hchlorine hit hforms ha hcompound hthat hmelts hat h801 C.
E) Sodium his hnever hfound has hthe hpure hmetal hin
hnature. hAns: h B Category: h Easy
Section: h 1.4
12. All hof hthe hfollowing hare hproperties hof htin. h Which hone his ha hchemical hproperty hof htin?
A) Tin hcan hbe hhammered hinto ha hthin hsheet.
B) At h–40 C hahsheet hof htinhcrumbles hto hahgrayhpowder.
C) Tin hmelts hat h231.9 C.
D) When ha hbar hof htin his hbent, hit hemits han haudible h―cry‖.
E) Tin herodes hwhen hadded hto hhydrochloric hacid, hand ha hclear hgas
hforms. hAns: h E Category: h Medium Section: h 1.4
Page h2
, Chapter h01: hIntroduction
13. Which hone hof hthe hfollowing hrepresents ha hchemical hchange?
A) boiling hwater hto hform hsteam
B) burning ha hpiece hof hcoal
C) heating hlead huntil hit hmelts
D) mixing hiron hfilings hand hsand hat hroom htemperature
E) breaking hglass
Ans: h B Category: h Medium Section: h 1.4
14. Which hof hthe hfollowing hdoes hnot hrepresent ha hchemical hchange?
A) a hfreshly hcut happle hturns hbrown
B) milk hturns hsour hon hstanding hat hroom htemperature
C) when hcooled hto h0 C, hliquid hwater hbecomes hice
D) frying han hegg
E) fermentation hof hsugar hto halcohol
hAns: h C Category: h Easy Section: h 1.4
15. The hSI hprefixes hnano hand hdeci hrepresent, hrespectively:
A) 10–h9 hand h10–h6. D) 109 hand h10–h6.
B) 106 hand h10–h3. E) 10–h9 hand h10–h1.
3 –3
C) 10 hand h10 h .
Ans: h E Category: Easy Section: h 1.7
16. The hSI hprefixes hmilli hand hmega hrepresent, hrespectively:
A) 106 hand h10–h6. D) 10–h3 hand h109.
–3
B) 10 h hand h10 . 6
E) 10–h6 hand h10–h3.
C) 103 hand h10–h6.
Ans: h B Category: Easy Section: h 1.7
17. The hSI hprefixes hkilo hand hcenti hrepresent, hrespectively:
A) 103 hand h10–h2. D) 10–h6 hand h102.
B) 106 hand h10–h1. E) 102 hand h10–h3.
–3 –2
C) 10 h hand h10 h .
Ans: h A Category: Easy Section: 1.7
18. A hnanometer hcorresponds hto:
A) 10–h2 hmeters. D) 10–h9 hmeters.
B) 10–h3 hmeters. E) 10–h12 hmeters.
–6
C) 10 h hmeters.
Ans: h D Category: h Easy Section: h 1.7
19. A hmicroliter hcorresponds hto:
A) 10– h2 hliters. B) h 10– h3 hliters. C) h 10– h6 hliters. D) h 10– h9 hliters. E) h 10–h12 hliters.
hAns: h C Category: h Easy Section: h 1.7
Page h3
