Test your basic knowledge |

CLEP Chemistry 1

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. Gases are composed of tiny - invisible molecules that are widely separated from one another in otherwise empty space.






2. *The surface area exposed affect chemical reactions because most reactions depend on the reactants coming into contact - increasing the rate of the reaction.






3. A process that occurs whent eh system is maintained at constant pressure.






4. 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.






5. In an exothermic process - energy is released and ^E of reaction is ________.






6. 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.






7. In titration - this is the point at which a particular indicator changes color.






8. Metals have electronegativities less than ____






9. A law that states that under conditions of constant temperature and pressure - equal volumes of different gases contain equal numbers of molecules.






10. The pressure of a gas is the result of collisions between the gas molecules and the walls of the container.






11. Deviations from Boyles law that occur with real gases represent _______ behavior.






12. The normal boiling point of a liquid is the temperature at which its vapor pressure is 760mm Hg.






13. In an endothermic process - energy is absorbed and ^E is _______.






14. _______ has very little effect on the solubility of liquids or solids in liquid solvents.






15. Cells that convert electrical energy into chemical energy.






16. The temperature at which a substance's solid and liquid phases are in equilibrium.






17. This process occurs when the system is maintained at the same temperature throughout an experiment.






18. _____ bonds are present in molecules containing double or triple bonds.






19. *The hypothetical ideal gas obeys exactly the mathematical statement of the ideal gas law. This statement is also called the _____ ___ ____ of an ideal gas because it relates the variables (P - V - n - T) that specify properties of the gas.






20. Any spontaneous change in a chemical reaction will decrease the amount of free energy toward _______ as the process proceeds towards equilibrium.






21. Electronegativities _______ as you go down a group.






22. A chemical reaction where there is an actual exchange of partners to form new compounds. ex: AgNO3 + NaCl -> AgCl + NaNO3.






23. Because of the low intermolecular forces - the melting points are low and evaporation takes place so easily that it may occur at room temperature.






24. This process occurs when the system is thermally isolated so that no heat enters or leaves.






25. If an inert gas is introduced into a reaction vessel containing other gases at equilibrium - it will cause an increase in the ______ _____ within the container - but the increase will not affect the position of equilibrium.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


26. 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






27. Rays made up of positive electrodes in basic electron charges.






28. The action of salts of weak acids or bases with water to form acidic or basic solutions.






29. 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.






30. 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.






31. The temperature at which the pressure of vapor escaping from the liquid equals atmospheric pressure.






32. The law stating that in any spontaneous process there is an increase in the entropy of the universe.






33. A pure crystal of elemental metal consists of roughly Avogrado's number of atoms held together by ________ bonds.






34. Electronegativities ________ from left to right in a period.






35. **Proceeding across a period from left to right - the ionization energy _______.






36. In a closed system - when opposing changes are taking place at equal rates - the system is said to be in _____ _______.






37. 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 _____ _






38. For a ________ reaction - the energy liberated in the exothermic reaction equals the energy absorbed in the endothermic reaction.






39. 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.






40. A hypothetical gas would follow Boyles law under all conditions and is called?






41. The amount of heat energy required to raise the temperature 1g of a substance by 1 degree celcius.






42. 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.






43. The amount of heat energy required to raise the temperature of a given quantity of a substance one degree celcius.






44. A catalyst lowers the ______ _____ _____ that must be overcome in order for the reaction to proceed. It merely speeds the approach to equilibrium but does not change Keq at all.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


45. A catalyst affects a chemical reaction by lowering the _____ _____ for both the forward and the reverse reactions equally.






46. 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.






47. 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


48. A law stating that at constant pressure - the volume of a given quantity of a gas varies directly with the temperature.






49. A state function in which it is the heat content of a substance.






50. *The temperature affects chemical reactions with an increase of ___degrees C above room temperature - causing the reaction rate to double.







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests