SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
CLEP Chemistry 1
Start Test
Study First
Subjects
:
clep
,
science
,
chemistry
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. *The temperature affects chemical reactions with an increase of ___degrees C above room temperature - causing the reaction rate to double.
second law of thermodynamics
10 degrees
boiling point elevation
combination
2. In a closed system - when the rates of evaporation and condensation are equal - the system is in ____ ______.
heats of formation
phase equilibrium
2
standard atmospheric pressure
3. A law stating that at constant pressure - the volume of a given quantity of a gas varies directly with the temperature.
decomposition
Charles law
equivalent point
kinetic molecular theory
4. The law stating that change in internal energy is equal to the difference between the energy supplied toi the system as heat and the energy removed from the system as work performed on the surroundings.
first law of thermodynamics
electronegativity
Van der Waals
partial
5. The pressure exerted by each gas in a mixture is called its _____ pressure.
bohr model
molar heat of sublimation
non-ideal
partial
6. Decreasing the concentrations of reactants shifts the equilibrium to the ______ - thus decreasing the concentration of products formed.
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
7. A state function in which it is the heat content of a substance.
positive
left (Le Chatelier's principle)
enthalpy
reversible reaction
8. Electronegativities _______ as you go down a group.
positive
point particles
decreases
reversible
9. Another way the second law is stated is that in any spontaneous change - the amount of free energy available ______.
wave mechanical model
decreases
10 degrees
zero
10. For a solution in which a nonvolatile solute is dissolved in a solvent - the vapor pressure is due only to the vapor of the solvent above the solution. This vapor pressure is given by _______ law.
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
11. When the rate of evaporation equals the rate of condensation - the system is in __________.
equilibrium
dynamic equilibrium
cathode rays
right (Le Chatelier's principle)
12. The ______ of the system is some particular set of conditions of pressure - temperature - number of moles of each component - and their physical form (ex: gas - liquid - solid or crystalline form).
activation energy barrier (Le Chatelier's principle)
equivalent point
increases
state (thermodynamics)
13. A chemical reaction where there is an actual exchange of partners to form new compounds. ex: AgNO3 + NaCl -> AgCl + NaNO3.
negative
double replacement/displacement
heats of formation
VSEPR
14. The energy required to remove an electron from an isolated atom in its ground state.
hybridyzation
ionization energy
moles (Le Chatelier's principle)
electrolytic cells
15. *The Concentration usually _____ the chemical reaction rate with increasing concentrations of the reactants.
state (thermodynamics)
increases
freezing point depression
...
16. In titration - this point occurs when equal numbers of equivalents of acid and base have been reacted. The solution at this point is neutral because neither of the ions of the salt in solution undergoes hydrolysis.
combination
equivalent point
catalysts
Boyles law
17. A law that states that for a given mass of gas - the volume is proportional to the pressure and absolute temperature.
state functions (thermodynamics)
combined gas law
kinetic molecular theory
ideal gas
18. Heat added to a system and work done by a system are considered _________ quantities.
entropy
change in enthalpy
positive
double replacement/displacement
19. A process that occurs whent eh system is maintained at constant pressure.
isopiestic process (thermodynamics)
point particles
hydrolysis
electrolytic reactions
20. The freezing point - boiling point - and vapor pressure of a solution differ from those of the pure solvent by amounts which are directly proportional to the molal concentration of the solute.
end point
colligative property law
temperature
kinetic molecular theory
21. The particular portion of the universe on which we wish to focus our attention. Everything else is called the surroundings.
system (thermodynamics)
second law of thermodynamics
combined gas law
10 degrees
22. Any spontaneous change in a chemical reaction will decrease the amount of free energy toward _______ as the process proceeds towards equilibrium.
zero
partial
kinetic molecular theory
decreases
23. The most active nonmetals are found in what corner of the periodic table?
double replacement/displacement
upper right corner
electrolytic reactions
irreversible and reversible processes
24. The process of mixing different orbitals of the same atom to form a new set of equivalent orbitals.
activation energy
hybridyzation
equilibrium
Le Chatelier's principle
25. Liquids with strong attractive forces have ______ boiling points.
...
heats of formation
point particles
high
26. The amount of heat energy required to raise the temperature of a given quantity of a substance one degree celcius.
negative
heat capacity
Boyles law
combined gas law
27. The degree of randomness of a system is represented by a thermodynamic quantity called? the greater the randomness - the greater the _______.
base - acid
negative
entropy
catalysts
28. Cells that convert electrical energy into chemical energy.
moles (Le Chatelier's principle)
Le Chatelier's principle
electrolytic cells
combined gas law
29. A valence theory that permits the geometric arrangement of atoms - or groups of atoms - about some central atom to be determined solely by considering the repulsions between the electron pairs present in the valence shell of the central atom.
second law of thermodynamics
combined gas law
point particles
Valence Shell Electron Pair Repulsion (VSEPR)
30. **Proceeding across a period from left to right - the ionization energy _______.
increases
hybridyzation
adiabatic process (thermodynamics)
positive
31. This process occurs when the system is maintained at the same temperature throughout an experiment.
isothermal process (thermodynamics)
cathode rays
Raoults law
freezing point depression
32. When the electron moves from the ground state to an excited state - it ______ energy.
absorbs (in atomic spectra)
positive charge
equilibrium
10 degrees
33. The temperature at which the pressure of vapor escaping from the liquid equals atmospheric pressure.
right (Le Chatelier's principle)
combined gas law
boiling point
10 degrees
34. The change in enthalpy of an endothermic reaction is ________.
Raoults law
heat capacity
positive
colligative property law
35. _______ has very little effect on the solubility of liquids or solids in liquid solvents.
kinetic molecular theory
pressure
wave mechanical model
isopiestic process (thermodynamics)
36. _____ bonds are present in molecules containing double or triple bonds.
pi bonds
sublimation
isopiestic process (thermodynamics)
molar heat of sublimation
37. When solids are heated at certain perssures - some solids vaporize directly without passing through the liquid phase.
change in enthalpy
Raoults law
sublimation
specific heat
38. For a cell at concentrations and conditions other than standard - a potential can be calculated using this equation.
decreases
first law of thermodynamics
lower left corner
Nernst equation
39. The vapor pressure increases with increasing _____.
temperature
freezing point depression
...
total pressure (Le Chatelier's principle)
40. For a ________ reaction - the energy liberated in the exothermic reaction equals the energy absorbed in the endothermic reaction.
reversible reaction
isothermal process (thermodynamics)
system (thermodynamics)
Van der Waals
41. This law states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the gases in mixture.
pressure
upper right corner
valence
Daltons law
42. The amount of heat energy required to raise the temperature 1g of a substance by 1 degree celcius.
negative
moles (Le Chatelier's principle)
specific heat
Le Chatelier's principle
43. A catalyst affects a chemical reaction by lowering the _____ _____ for both the forward and the reverse reactions equally.
decomposition
activation energy
non-ideal
kinetic molecular theory
44. This process occurs when the system is thermally isolated so that no heat enters or leaves.
increasing
adiabatic process (thermodynamics)
Charles law
freezing point depression
45. For most substances - when a hot concentrated solution is cooled - the excess solid ________. This is useful in purification of the solute.
crystallizes
freezing point depression
increases
irreversible and reversible processes
46. The molecules in a gas are in constant - continueous - random - and straight-line motion.
Raoult's law
lower left corner
decreases
kinetic molecular theory
47. A hypothetical gas would follow Boyles law under all conditions and is called?
ideal gas
non-ideal
...
electrolytic reactions
48. The action of salts of weak acids or bases with water to form acidic or basic solutions.
Charles law
emits (in atomic spectra)
hydrolysis
zero
49. The solubility of gases in liquid or solid solvents always increases with ________ pressure.
upper right corner
double replacement/displacement
state functions (thermodynamics)
increasing
50. *Molecules of ideal gases have no attraction for one another and have no intrinsic volume - they are ______ _____
sublimation
point particles
saturated solution
state functions (thermodynamics)