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Test your basic knowledge |
AP Chemistry
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Study First
Subjects
:
science
,
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. Increase Pressure
Root Mean Square Velocity
permanent gases
condensation
Decrease Volume and Increase Temperature
2. (organics) one carbon
endless
meth-
precipitate
Second-Order Half Life
3. Significant Digits of Conversion Factors
Formal Charge
octahedral
endless
Bronsted-Lowry base
4. For significant digits - leading zeros ____ significant
are not
Integrated Second-Order Rate Law
Bronsted-Lowry base
Heisenberg Uncertainty Principle
5. High-speed electrons
eth-
s (fourth quantum number)
Beta Particles-
Multiplying
6. 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)
Molecular Compounds
cyanide
Strong acid weak base rxn
Electronegativity
7. Instrument used to measure the pressure of atmospheric gas
Allotrope
Barometer
blue-violet
Dalton's Law of Partial Pressures
8. Proton acceptors - must have an unshared pair of e?s
Bronsted-Lowry base
dec-
Heat
system
9. Puts OH? into solution
-al
triple bond
Molar Heat Capacity
Arrhenius base
10. Raoult's Law - relations between vapor pressure and concentrations
heat of fusion
1/2mv²
P1= X1P1°
Ag+ - Pb2+ - Hg2+
11. What is defined by you taken from the whole universe
Bronsted-Lowry Base
Cation
heat of fusion
System
12. Ketone suffix
electrolyte
-one
Naming Binary Ionic Compounds
linear
13. AX2E - AX2E2
fusion
bent
sulfide
# protons (atom is defined by this)
14. Reactant which doesn't get used up completely in a chemical reaction
a precipitate forms
Radioactivity
Atomic Mass Unit
excess reactant
15. Half-life equation
Kinetic Molecular Theory - for ideal gases
N=N.(0.5)^time/time half-life
sulfate
n (first quantum number)
16. Occupies the space above and below a sigma bond
Pi Bond
Law of Multiple Proportions
e-
yellow --> green
17. Proton (symbol)
perchlorate
spontaneous
p+
Heat Capacity (C)
18. If a system @equilibrium is stressed - the system will shift so as to reestablish equilibrium
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19. Point at which liquid?gas occurs
Delta H or Enthalpy Change
A Roman numeral
boiling point
Dalton's Law
20. The energy required to raise 1 g of substance 1 degree C
boiling point
Radioactivity
LE Model
Specific Heat (s)
21. ClO3²?
-(P)(Change in V)
acetate
chlorate
1st law of thermodynamics
22. Temperature-pressure point after which gas can no longer form liquid
critical point
First-Order Half Life
Diffusion
Pressure of H2O must be Subtracted
23. The amount of energy/heat required to raise some substance 1 degree C
spontaneity
8.31J/Kmol
Thermochemistry
Heat Capacity (C)
24. A device used to measure Delta H
Theory of Relativity
Magnetic Quantum Number (ml)
Calorimeter
Pi Bond
25. When _____ significant digits - round answer to least significant digit
Multiplying
Cell Potential (Ecell)
Reducing Agent
Solvent
26. Gas to liquid
-(P)(Change in V)
condensation
0 degrees C - 1 atm
a precipitate forms
27. 1 sigma bond
single bond
base and hydrogen gas
third
chloride
28. Phase change from gas to solid
8.31J/Kmol
0
deposition
trigonal pyramidal
29. Oxidation # of Ions
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
charge
-oate
-(q of H2O + q of cal)
30. Pairs of electrons localized on an atom
Lone Pair
Surroundings
-2 - with peroxide -1
sublimation
31. Elements which have all electrons paired and relatively unaffected by magnetic fields
1atm=?Pa
Graham's Law
diamagnetic
cohesion
32. When ____ significant digits - round answer to least decimal place
trigonal bipyramidal
Adding
Scientific Method
sulfate
33. C2O4²?
% yield
London dispersion forces
Le Chatelier's Principle
oxalate
34. Dirrect Method Formula
Ligand
oxidizing agent
AH rxn = (Sum of AH of formation of products) - (Sum of AH of formation of reactants)
actual yield/theoretical yield x 100%
35. Unusually strong dipole forces found when H is bonded to N - O - or F
Quantum Model
Solute
Molar Mass of Element/ Total Molar Mass %
Hydrogen bonding
36. When two elements form a series of compounds - the ratios of the masses of the second element that combine with 1g of the first element can always be reduced to whole numbers
Dalton's Law
reduction
insoluble
Law of Multiple Proportions
37. Composition Formula
Heisenberg Uncertainty Principle
Molar Mass of Element/ Total Molar Mass %
red/orange
bromate
38. (organics) four carbons
but-
endothermic
d
Theory of Relativity
39. [A] vs. time is a ...-order reaction
moles solute/kg solvent
zero
Integrated Rate Law
analyte
40. Osmotic pressure=MRT
Osmotic Pressure
trigonal bipyramidal
surroundings
1) Convert to moles 2) divide by lowest moles 3) if any halfs - double all values 4) plug into Compound
41. R=
8.31J/Kmol
Trigonal Bipyramidal
octahedral
insoluble
42. Point at which the titrated solution changes color
prop-
Effusion
dichromate
end point
43. 180° - sp
fusion
Linear
1 atm
solid CO2
44. Positive ion
Coordination Compound
Cation
d
Bases
45. AX2 - AX2E3
1.86°C
moles of solute/ L of solution
Bond enthalpy
linear
46. Moles of solute/volume of soln(L)
hept-
purple --> pink
Molarity
weak acid strong base rxn
47. Volume of gas @STP
Amount of atoms present
22.4L
oxidizing agent
?Tb= kb x molality
48. # bonding e- - # antibonding e-/2
but-
Bond Order
Solubility Product (Ksp)
Acids
49. Verticals on the periodic table
Arrhenius equation
T-shape
1.38x10?²³J/K
group
50. C2H3O2¹?
Atmospheric Pressure
acetate
acid
blue-green
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