Chemistry Final ACS Exam Questions And Answers All Correct
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Course
ACS CHEMISTRY GENERAL 2024
Institution
ACS CHEMISTRY GENERAL 2024
Chemistry Final ACS Exam Questions And Answers All Correct
Accuracy? - ANS Closeness of measurements to the TRUE VALUE of what is being measured
Precision? - ANS Closeness of a SET of measurements
How do you calculate Percent Error? - ANS I experimental-accepted I
___________________...
Accuracy? - ANS Closeness of measurements to the TRUE VALUE of what is being
measured
Precision? - ANS Closeness of a SET of measurements
K
How do you calculate Percent Error? - ANS I experimental-accepted I
____________________ x 100
C
accepted value
Are zeros in front of non-zero digits significant? - ANS Nope!
LO
ex: 0.0071 is only 2 sig figs
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
YC
Addition/Subtraction in regards to sig figs? - ANS Round numbers to the least number
of decimal places
Multiplication/Division in regards to sig figs? - ANS Round answers to the least amount
D
of sig figs
U
# of e- equal - ANS the # of p+
Atomic Mass? - ANS Number of protons in the nucleus (number on the left bottom
ST
corner of the chemical symbol)
Atomic Mass Number? - ANS Number of protons and neutrons (number on the left
upper corner of the chemical symbol)
Isotope? - ANS Atoms of the same element, but with different masses (different
number of neutrons)
STUDY ELECTRON CONFIGURATIONS - ANS STUDY ELECTRON
CONFIGURATIONS
, Do columns or rows in the Periodic Table have similar patterns? - ANS Columns (the
"groups") have repeating patterns?
Which area of the Periodic Table has greater metallicness? - ANS Left and down has
greater metallicness
Which area of the PT has greater atomic size? - ANS Left and down has a greater
atomic size
K
Which area of the PT has greater ionization energy? - ANS Right side and up has
greater ionization energy
C
Which area of the PT has greater electronegativity? - ANS Right side and up has
greater electronegativity, except the Noble Gases of 0 electronegativity
LO
Ionic Bonding? - ANS Metal and nonmetals. Give/take electrons
Covalent bonding? - ANS Nonmetal and a nonmetal. Share electrons.
YC
VSEPR Theory? - ANS Valence Shell Electron Pair Repulsion
aka Valence e- pairs stay as far apart as possible
How do you determine polarity? - ANS Use the chart that has electronegativity values,
then subtract the elements in the compound from each other.
D
Is water polar? - ANS Yes!
U
Combination Reaction? - ANS A + B --> AB
ST
Decomposition Reaction? - ANS AB --> A + B
Single Replacement Reaction? - ANS AB + C --> AC + B
Double Replacement Reaction? - ANS AB + CD --> AD + CB
Combustion Reaction? - ANS C + H + O --> H2O + CO2 always
Avogadro's Number? - ANS 6.022 x 10^23 particles = 1 mole
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