ACS BIOCHEMISTRY COMPREHENSIVE
STUDY GUIDE TESTED QUESTIONS AND
VERIFIED ANSWERS
●● 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
STUDY GUIDE TESTED QUESTIONS AND
VERIFIED ANSWERS
●● 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