ACA Chemistry Final Exam Latest 2025 Actual Questions and Verified Answers (2025 / 2026) A+ Grade 100% Guarantee Verified by Experts

ACS Chemistry Final Exam Questions &
Answers

1.Accuracy?
ANS Closeness of measurements to the TRUE VALUE of what is being
measured


2.Precision?
ANS Closeness of a SET of measurements


3.How do you calculate Percent Error?
ANS I experimental-accepted I
x
100 accepted value


4.Are zeros infront of non-zero digis significant?
ANS Nope! ex
0.0071 is only 2 sig figs


5.Are zeros at the end of a number and to the right of the decimal significant?


ANS Yep!
ex
9.100 is 4 sig figs
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, 6.Addition/Subtraction in regards to sig figs?
ANS Round numbers to the least number of decimal places


7.Multiplaction/Division in regards to sig figs?
ANS Round answers to the least amount of sig figs


8.# of e- equal
ANS the # of p+


9.Atomic Mass?
ANS Number of protons in the nucleus (number on the left bottom
corner of the chemical symbol)


10.Atomic Mass Number?
ANS Number of protons and neutrons (number on the left upper corner
of the chemical symbol)


11.Isotope?
ANS Atoms of the same element, but with different masses
(different number of neutrons)


12.STUDY ELECTRON CONFIGURATIONS
ANS STUDY ELECTRON CONFIGURA- TIONS


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