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AP Chemistry

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. We cannot simultaneously determine an atom's exact path or location
conjugate base
Zero-Order Rate Law
Molal FP Depression Constant
Heisenberg Uncertainty Principle

2. When ____ significant digits - round answer to least decimal place
First-Order Rate Law
Adding
Formal Charge
see-saw

3. kb of water
Osmotic Pressure
0.512°C
8.314 J/K mol
Decrease Volume and Increase Temperature

4. NO3¹?
nitrate
entropy
Temperature
Solubility Product (Ksp)

5. R=
-ic acid
8.31J/Kmol
0
6.63x10?³4Js

6. Heat needed to change 1 g of substance to 1°C
2nd law of thermodynamics
specific heat
1/2mv²
Anode

7. F¹?
wavelength
end point
allotrope
flouride

8. The reactant that is being reduced - brings about oxidation
equivalence point
oxidizing agent
1) Convert to moles 2) divide by lowest moles 3) if any halfs - double all values 4) plug into Compound
Heisenberg Uncertainty Principle

9. Compound in which there is a bond between a metal and a non-metal; when naming - pay attention to ionic charges on periodic table (may be reduced)
0
Root Mean Square Velocity
H
Molecular Compounds

10. AX3E2
Ampere
t-shape
Pressure
Barometer

11. Transition metals with ammonia - hydroxide - cyanide or thiocyanate form...
Enthalpy of Solution
Trigonal Planar
permanent gases
complex ions

12. Pressure Units/Conversions
ionic
1 atm = 760 mmHg = 101.3 kPa
bent
base and hydrogen gas

13. Diatomic Molecules
specific heat
Limiting reactant
H2 - F2 - N2 - O2 - Cl2 - Br2 - I2
Zero-Order Half Life

14. Ability of an atom in a molecule to attract shared electrons to itself
paramagnetic
Matter
chlorite
Electronegativity

15. Type of system in which the energy may escape - but the mass is conserved
adhesion
Oxidizing Agent
Le Chatelier's Principle
Closed System

16. The likelihood that a rxn will occur "by itself"
Molal BP Elevation Constant
spontaneity
Surroundings
Increase Temperature

17. Force that holds atoms together
Equivalence Point
Chemical Bonds
% error
deposition

18. ln[A] vs. time is a ...-order reaction
1) Assume percentages are g (where you have 100 g) 2) convert to moles 3) divide by lowest value 4) plug into compound
group
first
base and hydrogen gas

19. 6.022x10^23
AE= AH - RTAn
-oic acid
boiling point
mol

20. Freezing point depression formula
force x distance = work done
?Tf= kf x molality
heat capacity
Covalently w/in themselves - Ionicly bonded w/ each other

21. Where oxidation occurs
solid CO2
Bonding Pairs
Adding
Anode

22. [A]0/2k
1) Assume percentages are g (where you have 100 g) 2) convert to moles 3) divide by lowest value 4) plug into compound
Zero-Order Half Life
Buffer
octahedral

23. AX4E
seesaw
deposition
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
Ag+ - Pb2+ - Hg2+ - Sr2+ - Ca2+ - Ba2+

24. Within a sublevel - place one e? per orbital before pairing them

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25. Similar to atomic orbitals - except between molecules
Finding Empirical Formulas
Cg=kPg
Molecular Orbitals (MOs)
Barometer

26. AX3
sublimation
LE Model
trigonal planar
entropy

27. Substance in which something is dissolved in a solution (higher [ ])
A Roman numeral
purple --> pink
Molecule
Solvent

28. % yield
sublimation
Thermochemistry
actual yield/theoretical yield x 100%
Molarity

29. Organic w/ -NH2
actual yield/theoretical yield x 100%
-oic acid
amine
mol Fraction

30. Point at which vapor pressure=air pressure above
Entropy (S)
Multiplying
heat of fusion
boiling point

31. PV=nRT
Ideal Gas Law
Molal FP Depression Constant
trigonal planar
1) multiply each AMU by the percentage that represents that isotopes occurrence in nature 2) then add all the AMUs together.

32. Ether prefix
-(q of H2O + q of cal)
Normality
vaporization
methoxy-

33. AX5
Amino-
Solubility Product (Ksp)
solid CO2
trigonal bipyramidal

34. Solution used in titration
square planar
supercritical fluid
titrant buret
effects of IMF

35. Metal oxide + H20 ->
g solute/g solvent x 100
base
Constant Volume
Pi Bond

36. Electron pairs found in the space between the atoms
deposition
Standard Temperature and Pressure
Bonding Pairs
Negative work value; work done by system

37. K=[C]^l[D]^m/[A]^j[B]^k; products/reactants; solids don't count
Percent Yield
Equilibrium Expression
p+
entropy

38. NH4¹?
n0
Pressure
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
ammonium

39. The energy required to raise 1 g of substance 1 degree C
E
Graham's Law
Specific Heat (s)
moles of solute/ L of solution

40. Point at which liquid?gas occurs
Net Ionic Equation
boiling point
Heat Capacity (C)
heat of fusion

41. As protons are added to the nucleus - electrons are similarly added
Theory of Relativity
Le Chatelier's Principle
yellow
Aufbau Principle

42. These orbitals are spherical
s orbitals
Sigma Bond
surroundings
mol

43. Energy required for melting to occur
nitrate
bromate
heat of fusion
Principal Quantum Number

44. Average speed of gas
N=N.(0.5)^time/time half-life
standard solution
Molarity
v3RT/M(in kg)

45. Solid to liquid
melting
boiling point
d orbitals
Acids

46. AX2E - AX2E2
H2 - F2 - N2 - O2 - Cl2 - Br2 - I2
bent
dec-
charge

47. AX6
Covalently w/in themselves - Ionicly bonded w/ each other
octahedral
Anion
d

48. Loss of electrons - increase in oxidation #
Integrated First-Order Rate Law
see-saw
oxidation
Open System

49. This MUST be determined experimentally
melting point
Bond Order
Overall Reaction Order
rate law

50. Forward rxn occurs when
Increase Temperature
Q<K
Molality
rate gas A/rate gas B = square root (mm gas B/ mm gas A)