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AP Chemistry

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Elements which have all electrons paired and relatively unaffected by magnetic fields
1/2mv²
adiabatic
diamagnetic
Law of Conservation of Mass

2. Bond bond in which atoms aren't so different that electrons are completely transferred but are different enough that unequal sharing occurs
Polar Covalent
base
0.0826Latm/Kmol
Bases

3. Cr2O7²?
Trigonal Planar
dichromate
LE Model
-ol

4. Thickness
Exothermic
analyte
viscosity
ionic

5. The mixing of native atomic orbitals to form special orbitals for bonding
Constant Volume
bromate
-one
Hybridization

6. kf of water
Calorimetry
1.86°C
log[H+]
are not

7. Studies the rate at which a chemical process occurs and sheds light on its reaction mechanism
Ionic
pent-
purple --> pink
Chemical Kinetics

8. PO4³?
phosphate
strong acid strong base rxn
q
Positive work value; work done on system

9. AX4E
are not
see-saw
purple --> pink
Chemical Bonds

10. How to Balance a Redox Equation
1)Assign Oxidation #s 2) Half Reaction 3) Balance Moles 2) Balance add e- to balance Oxidation #s (RED-OX = reduction on left - Oxidation on right) 4) Add H+ or OH - to balance charge 5) Add H2O to balance hydrogens 4) Balance electrons by multiplyin
cathode
0
Alpha Particles-

11. =vM2/M1
r1/r2
Molar Mass of Element/ Total Molar Mass %
Strong acid weak base rxn
condensation

12. % yield
Hund's Rule
Hybridization
soluble
actual yield/theoretical yield x 100%

13. As protons are added to the nucleus - electrons are similarly added
Law of Conservation of Mass
Scientific Method
ammonium
Aufbau Principle

14. (organics) single-bonded compound
blue-green
flouride
alkane
Positive work value; work done on system

15. To find activation energy use the...
trigonal pyramidal
Ag+ - Pb2+ - Hg2+ - Sr2+ - Ca2+ - Ba2+
Arrhenius equation
square planar

16. Electron (symbol)
e-
voltaic cells
-1
square pyramidal

17. Kinetic Energy per mol
equivalence point
3/2RT
Hybridization
Its element

18. Energy needed to break a bond
d orbitals
purple
analyte
bond energy

19. Mass/volume
-2 - with peroxide -1
Density
Increase Temperature
-(q of H2O + q of cal)

20. These orbitals are diagonal
Faraday
d orbitals
m (third quantum number)
ionic

21. Generally insoluble anions (names)
Alkaline earth metals
phosphate - sulfide - carbonate - sulfate
1) Convert to moles 2) divide by lowest moles 3) if any halfs - double all values 4) plug into Compound
condensation

22. The weight exerted by a column of air or the pressure exerted by the Earth's atmosphere
q
Atmospheric Pressure
yellow
boiling point

23. Combined Gas Law Formula
linear
trigonal bipyramidal
vaporization
P1V1/N1T1=P2V2/N2T2

24. AX5
linear
ammonium
trigonal bipyramidal
Ideal Gas Law

25. SI unit of energy; Kg*m^2/s^2
Joule
Surroundings
Graham's Law
Allotrope

26. SO3²?
trigonal bipyramidal
sulfite
P of a =(X of a)(total pressure)
Hess's Law

27. Proton acceptors - must have an unshared pair of e?s
adiabatic
Arrhenius equation
Bronsted-Lowry base
boiling point

28. For significant digits - trailing zeros _____ significant
are
red
high pressure - low temperature
adiabatic

29. Carbon - hydrogen - oxygen compounds
London dispersion forces
carbohydrates
Closed System
rate

30. If K>1 - then Gº<0 and reaction will be...at chemical equilibrium
heat of fusion
bromate
spontaneous
Closed System

31. l=1
Barometer
Law of Multiple Proportions
Law of Conservation of Mass
p

32. (msubs) Can only be +1/2 or -1/2
Aufbau Principle
Electron Spin Quantum Number
London Dispersion Forces
non-

33. Instrument used to measure the pressure of atmospheric gas
purple --> pink
1st law of thermodynamics
Isolated System
Barometer

34. Speed of Diffusion/Effusion formula
+1 - except if bonded to Alkali Metal -1
reduction agent
Arrhenius acid
rate gas A/rate gas B = square root (mm A/ mm B)

35. CrO4²?
chromate
oxidizing agent
blue
Atmospheric Pressure

36. Electrons in a hydrogen atom move around the nucleus only in circular orbits
voltaic cells
Quantum Model
octahedral
purple

37. AX4E
seesaw
are not
# protons (atom is defined by this)
endless

38. The reactant that is being reduced - brings about oxidation
oxidizing agent
charge
r1/r2
Anode

39. Type of system in which the energy and mass may leave or enter
lambda
Graham's Law
Open System
heat capacity

40. Anything occupying space and with mass
Matter
oxidation
conjugate acid
Graham's Law

41. ?Hsoln=?H1+?H2+?H3+...
Enthalpy of Solution
oxide gas and water
Counterions
N=N.(0.5)^time/time half-life

42. A molecule having a center of positive charge and a center of negative charge
s orbitals
Kinetic Molecular Theory - for ideal gases
Radioactivity
Dipole Moment

43. AX3E
analyte
96500
Principal Quantum Number
trigonal pyramidal

44. Theoretical yield-experimental yield/theoretical yieldx100
Isotopes
% error
but-
Bases

45. negative ion
charge
Anion
Coordination Compound
g solute/g solvent x 100

46. Dalton's Law of Partial Pressures (to find partial pressure formula)
paramagnetic
+1 - except if bonded to Alkali Metal -1
P of a =(X of a)(total pressure)
8.314 J/K mol

47. Driving force of the electrons
Monoprotic
Cell Potential (Ecell)
weak acid strong base rxn
Equilibrium Expression

48. E?s fill the lowest energy orbital first - then work their way up
Buffer
Ag+ - Pb2+ - Hg2+ - Sr2+ - Ca2+ - Ba2+
0.0821 atm L/mol K
Aufbau Principle

49. q cal = ?
work
CAT
conjugate acid
equivalence point

50. Uses a spontaneous redox rxn to generate electrical energy - consists of 2 half cells
voltaic cells
alkene
Q>K
yellow