CHEM 120 FINAL EXAM STUDY GUIDE
EXAM WITH CORRECT QUESTIONS
AND ANSWERS 2025
I. chemistry - CORRECT-ANSWERSthe science that tries to understand how matter
behaves by studying how atoms and molecules behave
II. scientific method - CORRECT-ANSWERSways of learning that emphasizes observation
and experimentation (self correcting)
III. observation - CORRECT-ANSWERSwe go out in nature and ask questions we measure
or observe some aspect of nature
IV. hypothesis - CORRECT-ANSWERStentative interpretation of an observation
V. law - CORRECT-ANSWERSsummarizes a large number of observations
VI. theory - CORRECT-ANSWERSmodel that explains and gives underlying causes for
observation
VII. imprecise - CORRECT-ANSWERSquick and easy like color
VIII. precise - CORRECT-ANSWERSmeasuring and proving like numbers
IX. scientific notation - CORRECT-ANSWERS1x10^6
X. significant figures - CORRECT-ANSWERSindicates how good or bad a measurement is
XI. all non zeros are - CORRECT-ANSWERSsignificant
XII. interior zeros - CORRECT-ANSWERSsignificant
XIII. trailing zeros before a decimal place - CORRECT-ANSWERSsignificant
XIV. trailing zeros after decimal place - CORRECT-ANSWERSsignificant
XV. 16.5400 - CORRECT-ANSWERS6 sig figs
, XVI. 130. - CORRECT-ANSWERS3 sig figs
XVII. 5003 - CORRECT-ANSWERS4 sig figs
XVIII. exact numbers - CORRECT-ANSWERSunlimited sig figs
XIX. 3 - CORRECT-ANSWERSunlimited sig figs
XX. multiplication and division - CORRECT-ANSWERSdetermined by the number with the
fewest significant figures
XXI. addition and subtraction - CORRECT-ANSWERSdetermined by decimal place
XXII. tera - CORRECT-ANSWERST 10^12
XXIII. giga - CORRECT-ANSWERSG 10^9
XXIV. mega - CORRECT-ANSWERSM 10^6
XXV. kilo - CORRECT-ANSWERSk 10^3
XXVI. centi - CORRECT-ANSWERSc 10^-2
XXVII. mili - CORRECT-ANSWERSm 10^-3
XXVIII. micro - CORRECT-ANSWERSu 10^-6
XXIX. nano - CORRECT-ANSWERSn 10^-9
XXX. pico - CORRECT-ANSWERSp 10^-12
XXXI. femto - CORRECT-ANSWERSf 10^-15
XXXII. how many pounds does a person who weighs 14.8 stone weight
XXXIII. stone = 14 lbs - CORRECT-ANSWERS207 lbs
XXXIV. convert 3.0 cm2 to mm2 - CORRECT-ANSWERS300 mm2
XXXV. density - CORRECT-ANSWERSmass/volume
XXXVI. if 5.32g of ethanol takes up 6.74ml of volume, what is the density in g/ml - CORRECT-
ANSWERS0.789 g/ml
EXAM WITH CORRECT QUESTIONS
AND ANSWERS 2025
I. chemistry - CORRECT-ANSWERSthe science that tries to understand how matter
behaves by studying how atoms and molecules behave
II. scientific method - CORRECT-ANSWERSways of learning that emphasizes observation
and experimentation (self correcting)
III. observation - CORRECT-ANSWERSwe go out in nature and ask questions we measure
or observe some aspect of nature
IV. hypothesis - CORRECT-ANSWERStentative interpretation of an observation
V. law - CORRECT-ANSWERSsummarizes a large number of observations
VI. theory - CORRECT-ANSWERSmodel that explains and gives underlying causes for
observation
VII. imprecise - CORRECT-ANSWERSquick and easy like color
VIII. precise - CORRECT-ANSWERSmeasuring and proving like numbers
IX. scientific notation - CORRECT-ANSWERS1x10^6
X. significant figures - CORRECT-ANSWERSindicates how good or bad a measurement is
XI. all non zeros are - CORRECT-ANSWERSsignificant
XII. interior zeros - CORRECT-ANSWERSsignificant
XIII. trailing zeros before a decimal place - CORRECT-ANSWERSsignificant
XIV. trailing zeros after decimal place - CORRECT-ANSWERSsignificant
XV. 16.5400 - CORRECT-ANSWERS6 sig figs
, XVI. 130. - CORRECT-ANSWERS3 sig figs
XVII. 5003 - CORRECT-ANSWERS4 sig figs
XVIII. exact numbers - CORRECT-ANSWERSunlimited sig figs
XIX. 3 - CORRECT-ANSWERSunlimited sig figs
XX. multiplication and division - CORRECT-ANSWERSdetermined by the number with the
fewest significant figures
XXI. addition and subtraction - CORRECT-ANSWERSdetermined by decimal place
XXII. tera - CORRECT-ANSWERST 10^12
XXIII. giga - CORRECT-ANSWERSG 10^9
XXIV. mega - CORRECT-ANSWERSM 10^6
XXV. kilo - CORRECT-ANSWERSk 10^3
XXVI. centi - CORRECT-ANSWERSc 10^-2
XXVII. mili - CORRECT-ANSWERSm 10^-3
XXVIII. micro - CORRECT-ANSWERSu 10^-6
XXIX. nano - CORRECT-ANSWERSn 10^-9
XXX. pico - CORRECT-ANSWERSp 10^-12
XXXI. femto - CORRECT-ANSWERSf 10^-15
XXXII. how many pounds does a person who weighs 14.8 stone weight
XXXIII. stone = 14 lbs - CORRECT-ANSWERS207 lbs
XXXIV. convert 3.0 cm2 to mm2 - CORRECT-ANSWERS300 mm2
XXXV. density - CORRECT-ANSWERSmass/volume
XXXVI. if 5.32g of ethanol takes up 6.74ml of volume, what is the density in g/ml - CORRECT-
ANSWERS0.789 g/ml
