Chemistry Final ACS Exam 2026 WITH 100%
ACCURATE ANSWERS
Accuracy? - ✔✔ANSWER✔✔-Closeness of measurements to the
TRUE VALUE of what is being measured
Precision? - ✔✔ANSWER✔✔-Closeness of a SET of measurements
How do you calculate Percent Error? - ✔✔ANSWER✔✔-I
experimental-accepted I
____________________ x 100
accepted value
Are zeros infront of non-zero digis significant? - ✔✔ANSWER✔✔-
Nope!
ex: 0.0071 is only 2 sig figs
Are zeros at the end of a number and to the right of the decimal
significant? - ✔✔ANSWER✔✔-Yep!
, ex: 9.100 is 4 sig figs
Addition/Subtraction in regards to sig figs? - ✔✔ANSWER✔✔-Round
numbers to the least number of decimal places
Multiplaction/Division in regards to sig figs? - ✔✔ANSWER✔✔-
Round answers to the least amount of sig figs
# of e- equal - ✔✔ANSWER✔✔-the # of p+
Atomic Mass? - ✔✔ANSWER✔✔-Number of protons in the nucleus
(number on the left bottom corner of the chemical symbol)
Atomic Mass Number? - ✔✔ANSWER✔✔-Number of protons and
neutrons (number on the left upper corner of the chemical symbol)
Isotope? - ✔✔ANSWER✔✔-Atoms of the same element, but with
different masses (different number of neutrons)
STUDY ELECTRON CONFIGURATIONS - ✔✔ANSWER✔✔-STUDY
ELECTRON CONFIGURATIONS
Do columns or rows in the Periodic Table have similar patterns? -
✔✔ANSWER✔✔-Columns (the "groups") have repeating patterns?
ACCURATE ANSWERS
Accuracy? - ✔✔ANSWER✔✔-Closeness of measurements to the
TRUE VALUE of what is being measured
Precision? - ✔✔ANSWER✔✔-Closeness of a SET of measurements
How do you calculate Percent Error? - ✔✔ANSWER✔✔-I
experimental-accepted I
____________________ x 100
accepted value
Are zeros infront of non-zero digis significant? - ✔✔ANSWER✔✔-
Nope!
ex: 0.0071 is only 2 sig figs
Are zeros at the end of a number and to the right of the decimal
significant? - ✔✔ANSWER✔✔-Yep!
, ex: 9.100 is 4 sig figs
Addition/Subtraction in regards to sig figs? - ✔✔ANSWER✔✔-Round
numbers to the least number of decimal places
Multiplaction/Division in regards to sig figs? - ✔✔ANSWER✔✔-
Round answers to the least amount of sig figs
# of e- equal - ✔✔ANSWER✔✔-the # of p+
Atomic Mass? - ✔✔ANSWER✔✔-Number of protons in the nucleus
(number on the left bottom corner of the chemical symbol)
Atomic Mass Number? - ✔✔ANSWER✔✔-Number of protons and
neutrons (number on the left upper corner of the chemical symbol)
Isotope? - ✔✔ANSWER✔✔-Atoms of the same element, but with
different masses (different number of neutrons)
STUDY ELECTRON CONFIGURATIONS - ✔✔ANSWER✔✔-STUDY
ELECTRON CONFIGURATIONS
Do columns or rows in the Periodic Table have similar patterns? -
✔✔ANSWER✔✔-Columns (the "groups") have repeating patterns?
