b
,This book is a gift that we hope would be of help to our family at STEM.
b b b b b b b b b b b b b b b b
Sincerely,
STEM Freelancer’s association
b b
,Chapter 1: Chemical Foundations
b b b
1. Which bof bthe bfollowing bis ban bexample bof ba bquantitative bobservation?
A) The bpiece bof bmetal bis blonger bthan bthe bpiece bof bwood.
B) Solution b1 bis bmuch bdarker bthan bsolution b2.
C) The bliquid bin bbeaker bA bis bblue.
D) The btemperature bof bthe bliquid bis b60°C.
E) At bleast btwo bof bthe babove b(A-D) bare bquantitative
bobservations.
ANS: b b D DIF: Easy REF: 1.2
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bscientific
bmethod bMSC: b Conceptual
2. A bquantitative bobservation
A) contains ba bnumber band ba bunit
B) does bnot bcontain ba bnumber
C) always bmakes ba bcomparison
D) must bbe bobtained bthrough bexperimentation
E) is bnone bof bthese
ANS: b b A DIF: Easy REF: 1.2
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bscientific
bmethod bMSC: b Conceptual
3. Generally, bobserved bbehavior bthat bcan bbe bformulated binto ba bstatement,
bsometimes bmathematical bin bnature, bis bcalled ba(n)
A) observation
B) measurement
C) theory
D) natural blaw
E) experiment
ANS: b b D DIF: Easy REF: 1.2
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bscientific
bmethod bMSC: b Conceptual
4. The bstatement b―The btotal bmass bof bmaterials bis bnot baffected bby ba bchemical bchange bin
bthose bmaterials‖ bis bcalled ba(n)
A) observation
B) measurement
C) theory
D) natural blaw
E) experiment
ANS: b b D DIF: Easy REF: 1.2
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bscientific
bmethod bMSC: b Conceptual
5. A bchemical btheory bthat bhas bbeen bknown bfor ba blong btime bbecomes ba blaw.
, ANS: b b F DIF: Easy REF: 1.2
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bscientific
bmethod bMSC: b Conceptual
6. Which bof bthe bfollowing bmetric brelationships bis bincorrect?
A) 1 bmicroliter b= b10–6
bliters
B) 1 bgram b= b103 bkilograms
C) 103 bmilliliters b= b1 bliter
D) 1 bgram b= b102 bcentigrams
E) 10 bdecimeters b= b1 bmeter
ANS: b b B DIF: Easy REF: 1.3
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bmeasurement b| bSI bunit b|
bprefixes bMSC: b Quantitative
7. For bwhich bpair bis bthe bSI bprefix bnot bmatched bcorrectly bwith bits bmeaning?
A)
B)
C)
D)
E)
ANS: b b C DIF: Easy REF: 1.3
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bmeasurement b| bSI bunit b|
bprefixes bMSC: b Conceptual
8. A bmetric bunit bfor blength bis
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS: b b D DIF: Easy REF: 1.3
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bmeasurement b| bSI bunit b| bbase
bunit bMSC: b Conceptual
9. Which bof bthe bfollowing bis bnot ba bunit bin bthe bSI bsystem?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS: b b E DIF: Easy REF: 1.3
KEY: b Chemistry b| bgeneral bchemistry b| bgeneral bconcepts b| bmeasurement b| bSI bunit b| bbase
bunit bMSC: b Conceptual
10. Order bthe bfour bmetric bprefixes bfrom bsmallest bto blargest.