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. The molecules in a gas collide with one another - but the collisions are perfectly elastic (they result in no net loss of energy).






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






3. The solubility of gases in liquid or solid solvents always increases with ________ pressure.






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






5. When the electron moves from the ground state to an excited state - it ______ energy.






6. Electronegativities _______ as you go down a group.






7. Liquids with strong attractive forces have ______ boiling points.






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






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






10. 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.






11. For a cell at concentrations and conditions other than standard - a potential can be calculated using this equation.






12. *Molecules of ideal gases have no attraction for one another and have no intrinsic volume - they are ______ _____






13. 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.






14. A chemical reaction where one substance is displacing another. ex: Fe + CuSo4 -> FeSo4 + Cu.






15. 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.






16. The pressure exerted by the gas molecules when they are in equilibrium with the liquid.






17. When the rate of evaporation equals the rate of condensation - the system is in __________.






18. 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


19. The vapor pressure increases with increasing _____.






20. *The Concentration usually _____ the chemical reaction rate with increasing concentrations of the reactants.






21. The particular portion of the universe on which we wish to focus our attention. Everything else is called the surroundings.






22. 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.






23. 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.






24. A law that states that for a given mass of gas - the volume is proportional to the pressure and absolute temperature.






25. 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).






26. The change in enthalpy of an exothermic reaction is ________.






27. State ________ depend only on the present state of the substance and not on the path by which the present state was attained. Enthalpy - energy - Gibbs free energy - and entropy are examples.






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






29. A chemical reaction formed from the breakdown of a compound into its individual elements or compounds.






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






31. *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.






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






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






34. 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.






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






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






37. This law states that the entropy of any pure - perfect crystal at absolute zero is equal to zero.






38. 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


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






40. Rays made up of electrons in basic electron charges.






41. The energy required to remove an electron from an isolated atom in its ground state.






42. The most active nonmetals are found in what corner of the periodic table?






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






44. The force with which the electrons flow from the negative electrode to the positive electrode through an external wire is called?






45. 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.






46. 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.






47. Metals have electronegativities less than ____






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






49. Cells that convert electrical energy into chemical energy.






50. 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