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AP Chemistry

Subjects : science, ap, 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. (N) number of equivalents per liter of solution






2. Reverse rxn occurs when






3. (organics) single-bonded compound






4. If K<1 - then Gº>0 and reaction will be...at chemical equilibrium






5. SO4²?






6. 1.Calculate moles of each atom in molecule 2.Divide each mole number by smallest mole number 3.If necessary - multiply every mole number to get a whole number 4.Moles of each atom is subscript in empirical formula






7. Generally insoluble anions (names)






8. Ideal Gas Law Formula






9. OIL RIG






10. Change without heat transfer between the system and its surroundings






11. Mol/L - concentration of a solution






12. H + donor






13. Puts OH? into solution






14. Unusually strong dipole forces found when H is bonded to N - O - or F






15. Electron pairs found in the space between the atoms






16. C=2.9979*10^8 m/s






17. Spectrum of light when an electron drops to energy level n=2






18. A solution used in titrations whose concentration is known






19. (organics) three carbons






20. A weak acid that changes color at or near the equivalence point






21. Carbon - hydrogen - oxygen compounds






22. r=k[A]






23. Releases/gives off heat (negative value)






24. IMF that exists in polar molecules






25. A given compound always has exactly the same proportion of elements by mass






26. Occupies the space above and below a sigma bond






27. AX4






28. Specific heat of water






29. H+ Acceptor






30. A molecule having a center of positive charge and a center of negative charge






31. Boltzmann constant - used in calculating speed of gas per molecule






32. When two elements form a series of compounds - the ratios of the masses of the second element that combine with 1g of the first element can always be reduced to whole numbers






33. Carbon & hydrogen compounds






34. ?H when 1 mol of bonds is broken in the gaseous state






35. Kinetic Energy is proportional to ______






36. Anions or cations as needed to produce a compound with non net charge






37. Change in moles (An) =?






38. % yield






39. Point at which the titrated solution changes color






40. A device used to measure Delta H






41. Ether prefix






42. Increase Pressure






43. If a system @equilibrium is stressed - the system will shift so as to reestablish equilibrium

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44. NH4¹?






45. ln[A] vs. time is a ...-order reaction






46. Equation to find Ea from reaction rate constants at two different temperatures






47. A solution that resists a change in its pH






48. Ketone suffix






49. Energy needed to vaporize a mole of a liquid






50. Color of Ba (flame test)