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. Metals have electronegativities less than ____
saturated solution
wave mechanical model
Boyles law
2
2. The law stating that in any spontaneous process there is an increase in the entropy of the universe.
Daltons law
second law of thermodynamics
positive
equivalent point
3. In a _______ expansion of a gas - the opposing pressure is virtually equal to the pressure exerted by the gas. It is ______ because any slight increase in the external pressure will reverse the process and cause compression to occure.
reversible
...
saturated solution
change in enthalpy
4. Any spontaneous change in a chemical reaction will decrease the amount of free energy toward _______ as the process proceeds towards equilibrium.
Valence Shell Electron Pair Repulsion (VSEPR)
zero
melting point
left - right (Le Chatelier's principle)
5. The heat change during a process carried out at a constant pressure.
change in enthalpy
pi bonds
equilibrium
dynamic equilibrium
6. Because of the low intermolecular forces - the melting points are low and evaporation takes place so easily that it may occur at room temperature.
Van der Waals
moles (Le Chatelier's principle)
Charles law
Le Chatelier's principle
7. A chemical reaction formed from the union of its elements.
temperature
bohr model
increases
combination
8. The general shape of any molecule can be predicted from the number of bonding and non-bonding electron pairs in the valence shell of the central atom. nonbonded pairs of electrons (lone pairs) are more repellent than bonded pairs.
positive charge
Raoults law
VSEPR
combined gas law
9. 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
wave mechanical model
decreases
positive
positive charge
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. 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.
Le Chatelier's principle
first law of thermodynamics
total pressure (Le Chatelier's principle)
Daltons law
12. *The temperature affects chemical reactions with an increase of ___degrees C above room temperature - causing the reaction rate to double.
Charles law
2
10 degrees
electrolytic cells
13. When the electron moves from the ground state to an excited state - it ______ energy.
heat capacity
reversible reaction
system (thermodynamics)
absorbs (in atomic spectra)
14. The solubility of gases in liquid or solid solvents always increases with ________ pressure.
increasing
point particles
vapor pressure
Raoult's law
15. A law stating that at constant pressure - the volume of a given quantity of a gas varies directly with the temperature.
Charles law
10 degrees
system (thermodynamics)
colligative property law
16. *The nature of the reactants and products affect chemical reactions because some elements and compounds have bonds that when broken/formed - react more rapidly with each other than others.
...
equation of state
Le Chatelier's principle
boiling point elevation
17. The pressure exerted by the gas molecules when they are in equilibrium with the liquid.
anode rays
combined gas law
vapor pressure
crystallizes
18. A law that states that for a given mass of gas - the volume is proportional to the pressure and absolute temperature.
electromotive force (emf)/ cell
Van der Waals
specific heat
combined gas law
19. The most active metals are found in what corner of the periodic table?
activation energy
lower left corner
isopiestic process (thermodynamics)
electromotive force (emf)/ cell
20. 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
21. The molecules in a gas collide with one another - but the collisions are perfectly elastic (they result in no net loss of energy).
isothermal process (thermodynamics)
moles (Le Chatelier's principle)
kinetic molecular theory
emits (in atomic spectra)
22. *The Concentration usually _____ the chemical reaction rate with increasing concentrations of the reactants.
third law of thermodynamics
partial
...
increases
23. When the rate of evaporation equals the rate of condensation - the system is in __________.
cathode rays
equilibrium
...
Raoults law
24. Rays made up of positive electrodes in basic electron charges.
anode rays
non-ideal
combined gas law
...
25. The _____ speed up the rate of a chemical reaction but do not change the equilibrium constant - it simply speeds up the rate of approach to equilibrium.
reversible
10 degrees
electronegativity
catalysts
26. 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.
zero
decomposition
Raoult's law
equivalent point
27. This law states that the entropy of any pure - perfect crystal at absolute zero is equal to zero.
third law of thermodynamics
reversible
heats of formation
kinetic molecular theory
28. In a closed system - when the rates of evaporation and condensation are equal - the system is in ____ ______.
2
Van der Waals
phase equilibrium
left - right (Le Chatelier's principle)
29. 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.
bohr model
colligative property law
Avogrados law
electronegativity
30. *Molecules of ideal gases have no attraction for one another and have no intrinsic volume - they are ______ _____
Van der Waals
point particles
anode rays
10 degrees
31. The degree of randomness of a system is represented by a thermodynamic quantity called? the greater the randomness - the greater the _______.
entropy
left - right (Le Chatelier's principle)
second law of thermodynamics
kinetic molecular theory
32. 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.
boiling point
Daltons law
VSEPR
ionization energy
33. The particular portion of the universe on which we wish to focus our attention. Everything else is called the surroundings.
increases
...
system (thermodynamics)
equation of state
34. 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.
electronegativity
10 degrees
electrolytic cells
right (Le Chatelier's principle)
35. The force with which the electrons flow from the negative electrode to the positive electrode through an external wire is called?
cathode rays
electromotive force (emf)/ cell
third law of thermodynamics
Daltons law
36. Electronegativities ________ from left to right in a period.
Charles law
electronegativity
state (thermodynamics)
increases
37. In an endothermic process - energy is absorbed and ^E is _______.
base - acid
positive
system (thermodynamics)
Le Chatelier's principle
38. The vapor pressure increases with increasing _____.
irreversible and reversible processes
third law of thermodynamics
temperature
combination
39. When a system at equilibrium is disturbed by adding or removing one of hte substances - all the concentrations will change until a new equilibrium point is reached with the same value of Keq.
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
40. A state function in which it is the heat content of a substance.
partial
bohr model
emits (in atomic spectra)
enthalpy
41. Electronegativities _______ as you go down a group.
second law of thermodynamics
decreases
non-ideal
change in enthalpy
42. Gases are composed of tiny - invisible molecules that are widely separated from one another in otherwise empty space.
kinetic molecular theory
metallic
reversible
heat capacity
43. The process of determining the amount of a solution of known concentration that is required to react completely with a certain amount of a sample that is being analyzed.
hydrolysis
standard atmospheric pressure
titration
Van der Waals
44. A catalyst affects a chemical reaction by lowering the _____ _____ for both the forward and the reverse reactions equally.
sublimation
pressure
activation energy
emits (in atomic spectra)
45. A pure crystal of elemental metal consists of roughly Avogrado's number of atoms held together by ________ bonds.
high
Daltons law
metallic
reversible
46. 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
Van der Waals
VSEPR
bohr model
point particles
47. The change in enthalpy of an endothermic reaction is ________.
partial
single replacement/displacement
state functions (thermodynamics)
positive
48. 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.
entropy
reversible reaction
kinetic molecular theory
Charles law
49. A chemical reaction formed from the breakdown of a compound into its individual elements or compounds.
negative
left (Le Chatelier's principle)
activation energy barrier (Le Chatelier's principle)
decomposition
50. Another way the second law is stated is that in any spontaneous change - the amount of free energy available ______.
decreases
wave mechanical model
...
Daltons law