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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. Liquid to solid






2. Oxidation # of Oxygen






3. The amount of energy/heat required to raise some substance 1 degree C






4. ClO4¹?






5. frequency symbol






6. Releases/gives off heat (negative value)






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






8. OIL RIG






9. Elements on staircase on periodic table






10. Describe various properties of one orbital






11. (organics) four carbons






12. Proton donors






13. In a given atom no two electrons can have the same set of four quantum numbers






14. A monoatomic cation takes name from...






15. AX6






16. Nonmetal oxide + H2O ->






17. The part of the universe one is focused upon (in thermodynamics)






18. (N) number of equivalents per liter of solution






19. 90° - d^2sp^3






20. (msubs) Can only be +1/2 or -1/2






21. These orbitals are diagonal






22. (organics) ten carbons






23. If anion ends in -ate - acid name ends in...






24. Volume of gas @STP






25. Amount of product produced when limiting reactant is used up






26. kf of water






27. In a titration - the point where moles of acid are equal to moles of base (just before the indicator changes color)






28. In a titration - the point where the indicator changes (just after moles of solid are equal to moles of base)






29. The actual amount of product produced in an experiment






30. Higher in energy than the atomic orbitals of which it is composed






31. AX5






32. Point at which the titrated solution changes color






33. Tools NEEDED for dilution






34. If Q<Ksp






35. Ecell= E°cell -RT/nF x lnQ






36. 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






37. How to Find an Empirical Formula Given Percentages






38. U(rms)=(3RT/M)^1/2






39. Boiling point - melting point - viscosity - vapor pressure - surface tension






40. SI unit of energy; Kg*m^2/s^2






41. When ____ significant digits - round answer to least decimal place






42. Passage of gas through tiny orifice






43. Wavelength symbol






44. BrO3¹?






45. F¹?






46. Does the same as equilibrium expression - except it uses initial concentrations






47. 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






48. Osmotic pressure=MRT






49. Isotope






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