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






2. 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


3. The vapor pressure increases with increasing _____.






4. A solution in which solid solute is in equilibrium with dissolved solute.






5. *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.






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






7. A law stating that the vapor pressure of a solution at a particular temperature is equal to teh mole fraction of the solvent in the liquid phase multiplied by the vapor pressure of the pure solvent at the same temperature.






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






9. The vapor pressure of an aqueous solution is always lowered by the additon of more solute - which causes the boiling point to be raised.






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






11. 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.






12. The change in enthalpy of an endothermic reaction is ________.






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






14. 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


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






16. For most substances - when a hot concentrated solution is cooled - the excess solid ________. This is useful in purification of the solute.






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






18. The heat change during a process carried out at a constant pressure.






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






20. The pressure exerted by each gas in a mixture is called its _____ pressure.






21. 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.






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






23. Cells that convert electrical energy into chemical energy.






24. 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


25. Metals have electronegativities less than ____






26. 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


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






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






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






30. **As we proceed to the right of the table - ______-forming properties decrease and _____-forming properties increase.






31. The most active metals are found in what corner of the periodic table?






32. The enthalpy changes associated with the reactions that correspond to the formation of a substance from its free elements are called?






33. 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.






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






35. 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 _____ _






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






37. 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.






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






39. The process of mixing different orbitals of the same atom to form a new set of equivalent orbitals.






40. Reactions that do not occur spontaneously can be forced to take place by supplying energy with an external current.






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






42. *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.






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






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






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






46. In a closed system - when the rates of evaporation and condensation are equal - the system is in ____ ______.






47. 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.






48. A chemical reaction formed from the union of its elements.






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






50. 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






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