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 most active nonmetals are found in what corner of the periodic table?
Boyles law
electronegativity
upper right corner
hydrolysis
2. The law stating that in any spontaneous process there is an increase in the entropy of the universe.
base - acid
activation energy
second law of thermodynamics
increases
3. 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.
third law of thermodynamics
total pressure (Le Chatelier's principle)
Valence Shell Electron Pair Repulsion (VSEPR)
state functions (thermodynamics)
4. Any spontaneous change in a chemical reaction will decrease the amount of free energy toward _______ as the process proceeds towards equilibrium.
temperature
zero
total pressure (Le Chatelier's principle)
emits (in atomic spectra)
5. The maximum work derived from any change will be obtained only if the process is carried out in a reversible manner. All real - spontaneous changes are therefore not reversible - and the work that can be derived from an irreversible change is alway l
cathode rays
metallic
saturated solution
irreversible and reversible processes
6. In titration - this is the point at which a particular indicator changes color.
upper right corner
electromotive force (emf)/ cell
Valence Shell Electron Pair Repulsion (VSEPR)
end point
7. The molecules in a gas collide with one another - but the collisions are perfectly elastic (they result in no net loss of energy).
colligative property law
kinetic molecular theory
upper right corner
decreases
8. The amount of heat energy required to raise the temperature 1g of a substance by 1 degree celcius.
negative
boiling point elevation
crystallizes
specific heat
9. Real gases act in a less than ideal way - especially under conditions of increased pressure and/or decreased temperture. Real gas behavior approaches that of ideal gases as the gas pressure becomes very low. The ideal gas is thus considered a _____ _
boiling point
vapor pressure
limiting law
kinetic molecular theory
10. In an endothermic process - energy is absorbed and ^E is _______.
2
entropy
positive
activation energy
11. When a hydrogen atom is bonded to a highly electronegative atom - it will become partially _____-charged - and will be attracted to neighboring electron pairs. This creates a hydrogen bond. The more polar the molecule - the more effective the hydroge
positive charge
state functions (thermodynamics)
activation energy barrier (Le Chatelier's principle)
entropy
12. A catalyst affects a chemical reaction by lowering the _____ _____ for both the forward and the reverse reactions equally.
limiting law
valence
isothermal process (thermodynamics)
activation energy
13. *The temperature affects chemical reactions with an increase of ___degrees C above room temperature - causing the reaction rate to double.
positive
10 degrees
second law of thermodynamics
reversible reaction
14. In a closed system - when opposing changes are taking place at equal rates - the system is said to be in _____ _______.
dynamic equilibrium
Van der Waals
combined gas law
zero
15. A theory of the hydrogen atom stating that the electron can exist in only certain stable energy levels and that when the electronic state of the atom changes - it must absorb or emit exactly that amound of energy equal to the difference betweent he f
bohr model
catalysts
electronegativity
entropy
16. Cells that convert electrical energy into chemical energy.
electrolytic cells
molar heat of sublimation
equilibrium
decomposition
17. The average kinetic energy of all the molecules collectively is directly proportional to the absolute temperature of the gas. The average kinetic energy of equal numbers of molecules of any gas is the same at the same temperature.
heats of formation
metallic
cathode rays
kinetic molecular theory
18. Increasing the pressure on a system at equilibrium will cause a shift in the position of equilibrium in the direction of the fewest number of ______ of gaseous reactants or products.
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
19. This is due to the way positive charges of one molecule attract the negative charges of another molecule. Compounds of the solid state that are bound mainly by this type of attractive have soft crystals - are easily deformed - and vaporize easily.
kinetic molecular theory
Van der Waals
point particles
kinetic molecular theory
20. If this law was strictly obeyed - gases would not condense when they are cooled. This means that gases behave in an ideal fashion only at relatively high temperatures and low pressures.
molar heat of sublimation
vapor pressure
Charles law
emits (in atomic spectra)
21. Gases are composed of tiny - invisible molecules that are widely separated from one another in otherwise empty space.
positive
kinetic molecular theory
moles (Le Chatelier's principle)
electrolytic reactions
22. The ________ of an element is a number that measerures the relative strength in which the atoms of the element attract valence electrons in a chemical bond - on a scale of 0-4.
entropy
left (Le Chatelier's principle)
adiabatic process (thermodynamics)
electronegativity
23. 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.
colligative property law
heat capacity
total pressure (Le Chatelier's principle)
Van der Waals
24. *The Concentration usually _____ the chemical reaction rate with increasing concentrations of the reactants.
increases
sublimation
pi bonds
right (Le Chatelier's principle)
25. The force with which the electrons flow from the negative electrode to the positive electrode through an external wire is called?
phase equilibrium
electromotive force (emf)/ cell
equation of state
enthalpy
26. When the electron moves from the ground state to an excited state - it ______ energy.
absorbs (in atomic spectra)
negative
enthalpy
increases
27. A principle stating that when a system at equilibrium is disturbed by the application of a stress (change in temperature - pressure - or concentration) it reacts to minimize the stress and attain a new equilibrium position.
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
28. For a ________ reaction - the energy liberated in the exothermic reaction equals the energy absorbed in the endothermic reaction.
first law of thermodynamics
reversible reaction
kinetic molecular theory
upper right corner
29. A chemical reaction where there is an actual exchange of partners to form new compounds. ex: AgNO3 + NaCl -> AgCl + NaNO3.
equilibrium
double replacement/displacement
state functions (thermodynamics)
specific heat
30. The particular portion of the universe on which we wish to focus our attention. Everything else is called the surroundings.
catalysts
decreases
system (thermodynamics)
entropy
31. The heat required to change 1mole of solid completely to vapor.
molar heat of sublimation
kinetic molecular theory
kinetic molecular theory
lower left corner
32. *Molecules of ideal gases have no attraction for one another and have no intrinsic volume - they are ______ _____
upper right corner
Van der Waals
point particles
moles (Le Chatelier's principle)
33. Electronegativities ________ from left to right in a period.
phase equilibrium
second law of thermodynamics
hybridyzation
increases
34. For most substances - when a hot concentrated solution is cooled - the excess solid ________. This is useful in purification of the solute.
crystallizes
Charles law
Raoults law
upper right corner
35. **Proceeding across a period from left to right - the ionization energy _______.
equation of state
second law of thermodynamics
change in enthalpy
increases
36. Liquids with strong attractive forces have ______ boiling points.
Charles law
heats of formation
entropy
high
37. The energy required to remove an electron from an isolated atom in its ground state.
double replacement/displacement
specific heat
ionization energy
activation energy barrier (Le Chatelier's principle)
38. A chemical reaction formed from the union of its elements.
state (thermodynamics)
negative
combination
heats of formation
39. For a cell at concentrations and conditions other than standard - a potential can be calculated using this equation.
negative
boiling point
Nernst equation
...
40. A law that states that under conditions of constant temperature and pressure - equal volumes of different gases contain equal numbers of molecules.
freezing point depression
Avogrados law
lower left corner
electrolytic cells
41. Because of the low intermolecular forces - the melting points are low and evaporation takes place so easily that it may occur at room temperature.
increases
Raoult's law
combination
Van der Waals
42. A process that occurs whent eh system is maintained at constant pressure.
...
isopiestic process (thermodynamics)
Raoult's law
standard atmospheric pressure
43. A state function in which it is the heat content of a substance.
increases
first law of thermodynamics
enthalpy
entropy
44. The degree of randomness of a system is represented by a thermodynamic quantity called? the greater the randomness - the greater the _______.
Nernst equation
sublimation
increases
entropy
45. Electronegativities _______ as you go down a group.
kinetic molecular theory
decreases
titration
equation of state
46. When the rate of evaporation equals the rate of condensation - the system is in __________.
VSEPR
specific heat
wave mechanical model
equilibrium
47. 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.
activation energy barrier (Le Chatelier's principle)
first law of thermodynamics
negative
reversible
48. The process of mixing different orbitals of the same atom to form a new set of equivalent orbitals.
total pressure (Le Chatelier's principle)
hybridyzation
right (Le Chatelier's principle)
limiting law
49. The pressure of a gas is the result of collisions between the gas molecules and the walls of the container.
first law of thermodynamics
Le Chatelier's principle
Daltons law
kinetic molecular theory
50. 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.
temperature
single replacement/displacement
equivalent point
kinetic molecular theory