CHEM 1151 ACTUAL STUDY BANK 2026
SOLVED QUESTIONS VERIFIED
⫸ 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?
⫸ Which area of the Periodic Table has greater metallicness? Answer:
Left and down has greater metallicness
⫸ Which area of the PT has greater atomic size? Answer: Left and
down has a greater atomic size
⫸ Which area of the PT has greater ionization energy? Answer: Right
side and up has greater ionization energy
SOLVED QUESTIONS VERIFIED
⫸ 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?
⫸ Which area of the Periodic Table has greater metallicness? Answer:
Left and down has greater metallicness
⫸ Which area of the PT has greater atomic size? Answer: Left and
down has a greater atomic size
⫸ Which area of the PT has greater ionization energy? Answer: Right
side and up has greater ionization energy
