General Chemistry ACS Final Exam
Study Guide (Questions and Answers)
Expert Graded A+
1. Accuracy? - ANSWER Closeness of measurements to the TRUE VALUE
of what is being measured
2. Precision? - ANSWER Closeness of a SET of measurements
3. How do you calculate Percent Error? - ANSWER I experimental-accepted I
____________________ x 100
accepted value
4. Are zeros infront of non-zero digis significant? - ANSWER Nope!
ex: 0.0071 is only 2 sig figs
5. VSEPR Theory? - ANSWER Valence Shell Electron Pair Repulsion
aka Valence e- pairs stay as far apart as possible
6. How do you determine polarity? - ANSWER Use the chart that has
electronegativity values, then subtract the elements in the compound from
each other.
7. Is water polar? - ANSWER Yes!
,8. Combination Reaction? - ANSWER A + B --> AB
9. Decomposition Reaction? - ANSWER AB --> A + B
10.Single Replacement Reaction? - ANSWER AB + C --> AC + B
11.Double Replacement Reaction? - ANSWER AB + CD --> AD + CB
12.Combustion Reaction? - ANSWER C + H + O --> H2O + CO2 always
13.Avogadro's Number? - ANSWER 6.022 x 10^23 particles = 1 mole
14.Molar Mass? - ANSWER gram/mole
15.Mole to Volume? - ANSWER 1 mole = 22.4 L
16.Empirical Formula vs Molecular Formula? - ANSWER Molecular = the
actual number of atoms in a compound
Empirical = basic ratio, smallest whole numbers of atoms in a compound
17.Percent Composition? - ANSWER Mass element/mass compound x 100
18.Limiting Reactant? - ANSWER The reactant which runs out first...meaning
it limits how much product can be made
ex: If there's 1 mole of NaOH and 2 moles of HCl, NaOH is the limiting
reactant, because it is used up (only 1 mole)
,19.Which state of matter has the greatest Kinetic Energy? - ANSWER Gas has
the greatest KE, because the particles are far apart and moving fast
20.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
21.Addition/Subtraction in regards to sig figs? - ANSWER Round numbers to
the least number of decimal places
22.Multiplication /Division in regards to sig figs? - ANSWER Round answers
to the least amount of sig figs
23.# of e- equal - ANSWER the # of p+
24.Atomic Mass? - ANSWER Number of protons in the nucleus (number on
the left bottom corner of the chemical symbol)
25.Atomic Mass Number? - ANSWER Number of protons and neutrons
(number on the left upper corner of the chemical symbol)
26.Isotope? - ANSWER Atoms of the same element, but with different masses
(different number of neutrons)
27.Do columns or rows in the Periodic Table have similar patterns? -
ANSWER Columns (the "groups") have repeating patterns?
, 28.Which area of the Periodic Table has greater metallicness? - ANSWER Left
and down has greater metallicness
29.Which area of the PT has greater atomic size? - ANSWER Left and down
has a greater atomic size
30.Which area of the PT has greater ionization energy? - ANSWER Right side
and up has greater ionization energy
31.Which area of the PT has greater electronegativity? - ANSWER Right side
and up has greater electronegativiy, except the Noble Gases of 0
electronegativy
32.Ionic Bonding? - ANSWER Metal and a nonmetal. Give/take electrons
33.Covalent bonding? - ANSWER Nonmetal and a nonmetal. Share electrons.
34.What are the three types of Intermolecular Forces? - ANSWER (1)
Hydorgen Bonding
(2) Dipole Attraction
(3) Dispersion Forces
35.What do you call a solid changing to a gas? - ANSWER Sublimation
36.What are the values for STP? - ANSWER 0 Celcius or 273 Kelvin
1 atm = 101.3 kPa = 760 mmHg
Study Guide (Questions and Answers)
Expert Graded A+
1. Accuracy? - ANSWER Closeness of measurements to the TRUE VALUE
of what is being measured
2. Precision? - ANSWER Closeness of a SET of measurements
3. How do you calculate Percent Error? - ANSWER I experimental-accepted I
____________________ x 100
accepted value
4. Are zeros infront of non-zero digis significant? - ANSWER Nope!
ex: 0.0071 is only 2 sig figs
5. VSEPR Theory? - ANSWER Valence Shell Electron Pair Repulsion
aka Valence e- pairs stay as far apart as possible
6. How do you determine polarity? - ANSWER Use the chart that has
electronegativity values, then subtract the elements in the compound from
each other.
7. Is water polar? - ANSWER Yes!
,8. Combination Reaction? - ANSWER A + B --> AB
9. Decomposition Reaction? - ANSWER AB --> A + B
10.Single Replacement Reaction? - ANSWER AB + C --> AC + B
11.Double Replacement Reaction? - ANSWER AB + CD --> AD + CB
12.Combustion Reaction? - ANSWER C + H + O --> H2O + CO2 always
13.Avogadro's Number? - ANSWER 6.022 x 10^23 particles = 1 mole
14.Molar Mass? - ANSWER gram/mole
15.Mole to Volume? - ANSWER 1 mole = 22.4 L
16.Empirical Formula vs Molecular Formula? - ANSWER Molecular = the
actual number of atoms in a compound
Empirical = basic ratio, smallest whole numbers of atoms in a compound
17.Percent Composition? - ANSWER Mass element/mass compound x 100
18.Limiting Reactant? - ANSWER The reactant which runs out first...meaning
it limits how much product can be made
ex: If there's 1 mole of NaOH and 2 moles of HCl, NaOH is the limiting
reactant, because it is used up (only 1 mole)
,19.Which state of matter has the greatest Kinetic Energy? - ANSWER Gas has
the greatest KE, because the particles are far apart and moving fast
20.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
21.Addition/Subtraction in regards to sig figs? - ANSWER Round numbers to
the least number of decimal places
22.Multiplication /Division in regards to sig figs? - ANSWER Round answers
to the least amount of sig figs
23.# of e- equal - ANSWER the # of p+
24.Atomic Mass? - ANSWER Number of protons in the nucleus (number on
the left bottom corner of the chemical symbol)
25.Atomic Mass Number? - ANSWER Number of protons and neutrons
(number on the left upper corner of the chemical symbol)
26.Isotope? - ANSWER Atoms of the same element, but with different masses
(different number of neutrons)
27.Do columns or rows in the Periodic Table have similar patterns? -
ANSWER Columns (the "groups") have repeating patterns?
, 28.Which area of the Periodic Table has greater metallicness? - ANSWER Left
and down has greater metallicness
29.Which area of the PT has greater atomic size? - ANSWER Left and down
has a greater atomic size
30.Which area of the PT has greater ionization energy? - ANSWER Right side
and up has greater ionization energy
31.Which area of the PT has greater electronegativity? - ANSWER Right side
and up has greater electronegativiy, except the Noble Gases of 0
electronegativy
32.Ionic Bonding? - ANSWER Metal and a nonmetal. Give/take electrons
33.Covalent bonding? - ANSWER Nonmetal and a nonmetal. Share electrons.
34.What are the three types of Intermolecular Forces? - ANSWER (1)
Hydorgen Bonding
(2) Dipole Attraction
(3) Dispersion Forces
35.What do you call a solid changing to a gas? - ANSWER Sublimation
36.What are the values for STP? - ANSWER 0 Celcius or 273 Kelvin
1 atm = 101.3 kPa = 760 mmHg
