AP Chemistry Basics
What is the correct formula for aluminum chloride?
AlCl3
What is the correct name for CuO
Copper (II) Oxide
Identify the oxidation numbers in CrO4 2-
Cr, +6; O -2
What chemical is reduced in the following reaction? 2Al + 3Cu2+ --> 2Al3+ + 3Cu
Cu, because it gains two electrons
What is the correct formula for tin (II) sulfate
SnSO4
What is the correct name for SF6?
Sulfur hexafluoride
What is the correct name for SO3?
Sulfur trioxide
What is the correct name for H2SO3?
Sulfurous acid
What is the correct name for XeF4
Xenon tetrafluoride
What is the correct name for HNO2?
Nitrous acid
Silver nitrate and sodium chloride solutions are mixed. What is the precipitate
AgCl
Calculate the average atomic mass of element X. A sample of X is 65.20% X-17, 13.50% X-18, and 21.30% X-19.
17.56 amu
Aluminum and copper (ll) chloride react. What is the balanced chemical equation?
2Al + 3CuCl2 --> 2AlCl3 + 3Cu
Write the net ionic equation for the reaction of potassium iodide and lead (ll) nitrate
2I- + Pb2+ --> PbI2
Calculate the average atomic mass of element X. A sample of X is 22.50% X-37, and 77.50% X-35.
35.45 amu
What is the net ionic equation for the reaction of ammonium phosphate and nickel (ll) nitrate
3Ni2+ + 2PO4 3- --> Ni3(PO4)2
Which of the following is most electronegative? A. S B. P C. Al D. Na
A. S
Which of the following are isoelectronic? a. Na+, K+, Rb+ b.O2-, S2-, Se c. O2-, Ne, Mg2+ d. He, Ne, Ar
C. O2-, Ne, Mg2+
Calcium nitrate and sodium hydroxide solutions are mixed, what precipitates out?
Ca(OH)2
What is the correct formula for calcium nitride?
Ca3N2
What forms when calcium metal and hydrocloric acid react?
CaCl2 and hydrgen gas
What is the corrrect name for Ca(C2H3O2)2
Calcium acetate
What is the correct formula for cobalt (II) sulfide?
CoS
What group of elements has the lowest first ionization energy
Group 1
What chemical is reduced in the following reaction? Ca + 2H+ --> Ca2+ +H2
H+
What is the correct formula for chloric acid?
HClO3
What is the correct formula for hydroiodic acid?
HI
What is the correct formula for iodine pentachloride?
ICL5
What is the pattern for ionization energy
Increases across a period, decreases down a period
What is the pattern for atomic radius
Increases down and across a period
What is the correct name for ICl5
Iodine Pentachloride
What is the correct name for FeS
Iron (II) Sulfide
Identify the oxidation numbers in MnO4-
Mn +7, O 2-
What is the correct formula for dinitrogen monoxide?
N2O
What is the correct formula for trinitrogen heptoxide?
N3O7
What forms when sodium hydroxide and sulfuric acid react
Na2SO4 and water
What forms when hydrochloric acid and sodium carbonate react?
NaCl, water, and CO2
What is the correct formula for diphosphorus pentoxide?
P2O5
Solutions of potassium iodide and lead (ll) nitrate are mixed, what precipitates out?
PbI2
What is the correct name for K2SO4?
Potassium Sulfate
What is electron affinity?
The energy difference between the lowest state of a neutral atom, and the lowest state of the corresponding negative atom, in its gaseous state
