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AP Chemistry

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. How fast or slow a reaction occurs - becomes slower as it reaches equilibrium
rate
sulfide
seesaw
blue

2. If Q>Ksp
a precipitate forms
trigonal bipyramidal
% yield
Alpha Particles-

3. Mol of solute/kg of solvent
Molality
0
M1V1=M2V2
Speed of light

4. Proton donors
AE= AH - RTAn
tetrahedral
Bronsted-Lowry acid
Atomic Mass Unit

5. F¹?
s
E
flouride
Molecule

6. As protons are added to the nucleus - electrons are similarly added
Dalton's Law
-(q of H2O + q of cal)
Molecular Compounds
Aufbau Principle

7. In a given atom no two electrons can have the same set of four quantum numbers
Pauli Exclusion Principle
Molal BP Elevation Constant
conjugate acid
Exothermic

8. Determined by the formula h/m(in kg)v - (v=velocity)
wavelength
-(q of H2O + q of cal)
Quantum Numbers
insoluble

9. Half cell in which reduction occurs
Bond Order
Delta H or Enthalpy Change
permanent gases
cathode

10. NO3¹?
Finding Empirical Formulas
Manometer
red
nitrate

11. Atomic #
boiling point
# protons (atom is defined by this)
Molality
Ag+ - Pb2+ - Hg2+

12. Peak of energy diagram
Molar Heat Capacity
oxidizing agent
activated complex (transition state)
supercritical fluid

13. E=mc^2
methoxy-
Theory of Relativity
Pauli Exclusion Principle
London dispersion forces

14. Mixing of gases
pi=(nRT)/v
Molal BP Elevation Constant
Diffusion
Alkaline earth metals

15. Point at which the titrated solution changes color
r1/r2
Acids
Polar Covalent
end point

16. AX2E - AX2E2
bent
square pyramidal
alkene
ether

17. If K<1 - then Gº>0 and reaction will be...at chemical equilibrium
1 atm = 760 mmHg = 101.3 kPa
high pressure - low temperature
iodide
not spontaneous

18. Describe various properties of one orbital
Quantum Numbers
Net Ionic Equation
22.4L
LeChatelier's Principle

19. Organic reaction in which water breaks apart a molecule (splitting into two hydroxides)
22.4L
hydrolysis
moles solute/kg solvent
Effusion

20. The chemical formed when an acid donates a proton
activation energy
conjugate base
Colligative properties
Percent Yield

21. In ideal gas law problem - when it says "atmospheric" ...
Pressure of H2O must be Subtracted
# protons + # neutrons
blue-green
AH rxn = (Sum of AH of formation of products) - (Sum of AH of formation of reactants)

22. Reverse rxn occurs when
blue-violet
Q>K
Polar Covalent
Tetrahedral

23. 96 -485 C/mol e-
Faraday
3.0x108m/s
Acids
Pressure of H2O must be Subtracted

24. A measure of randomness or disorder
PV=nRT
Van't Hoff factor
entropy
group

25. Force that holds atoms together
rate gas A/rate gas B = square root (mm A/ mm B)
Speed of light
a precipitate forms
Chemical Bonds

26. When gas expands ...
8.31J/Kmol
Delta H or Enthalpy Change
Negative work value; work done by system
Chemical Bonds

27. Color of Na (flame test)
Isolated System
Dalton's Law
Van't Hoff factor
yellow

28. Average speed of gas
Heat
Molecular Compounds
v3RT/M(in kg)
Decrease Volume and Increase Temperature

29. Chemical composition of dry ice
0.512°C
solid CO2
STP
v3kT/m

30. Studies the rate at which a chemical process occurs and sheds light on its reaction mechanism
Chemical Kinetics
hydro-ic acid
Trigonal Planar
Faraday

31. Liquid to gas
tetrahedral
vaporization
Hess's Law
activated complex (transition state)

32. [A]0/2k
Exothermic
square planar
Zero-Order Half Life
PEACe 1)each molecule is a Point in space 2)Elastic collisions 3) no force of Attraction 4) no energy lost or gained to Collisions

33. If heat capacity isn't mentioned - you can assume that q of cal is = ?
0
diamagnetic
Hund's Rule
pi=(nRT)/v

34. (organics) seven carbons
hept-
Solvent
Integrated First-Order Rate Law
charge

35. Symbol for Enthalpy
mol Fraction
P1= X1P1°
freezing
H

36. E?s fill the lowest energy orbital first - then work their way up
rate
Cell Potential (Ecell)
Aufbau Principle
Reducing Agent

37. Colors of Reaction when (MnO4 -) --> (Mn2+)
PV=nRT
Isotopes
reduction agent
purple --> pink

38. % yield
Thermochemistry
Aufbau Principle
3rd law of thermodynamics
actual yield/theoretical yield x 100%

39. The heat changed in a chemical reaction.
Ag+ - Pb2+ - Hg2+ - Sr2+ - Ca2+ - Ba2+
Thermochemistry
melting
l (second quantum number)

40. Spontaneous emission of radiation
Radioactivity
Molecular
m (third quantum number)
Specific Heat (s)

41. Ending for alcohols
Dalton's Law
single bond
Solute
-ol

42. Combined Gas Law Formula
different # of neutrons
Radioactivity
Bond enthalpy
P1V1/N1T1=P2V2/N2T2

43. Has values from -l to l - including zero; tells orientation of the orbital relative to other orbitals
are not
Colligative properties
Magnetic Quantum Number (ml)
freezing

44. Electron pairs found in the space between the atoms
pi=(nRT)/v
Bonding Pairs
Linear
Law of Conservation of Mass

45. Color of Ca (flame test)
red/orange
1) Assume percentages are g (where you have 100 g) 2) convert to moles 3) divide by lowest value 4) plug into compound
oxalate
Solubility Product (Ksp)

46. Everything in the universe that is not defined by you as part of the system
Q>K
green/yellow
London dispersion forces
Surroundings

47. AX5
rate gas A/rate gas B = square root (mm A/ mm B)
-al
third
trigonal bipyramidal

48. HF+ OH??H2O
weak acid strong base rxn
strong bases
log[H+]
moles solute/kg solvent

49. C2H3O2¹?
catalyst
Calorimeter
acetate
Specific Heat (s)

50. 1.Calculate moles of each atom in molecule 2.Divide each mole number by smallest mole number 3.If necessary - multiply every mole number to get a whole number 4.Moles of each atom is subscript in empirical formula
Finding Empirical Formulas
tetrahedral
activated complex (transition state)
6.63x10?³4Js

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AP Chemistry

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