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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. Oxidation # of Polyatomic Ions






2. Oxidation # of Hydrogen






3. Instrument used to measure the pressure of atmospheric gas






4. The rest of the universe (in thermodynamics)






5. How to Balance a Redox Equation






6. Lowers activation energy






7. Ionizes to produce OH- Ions






8. Substances above the critical temperature and pressure in which the pressure is so high that density and flowing ability of a "gas" resembles that of a liquid






9. Type of system in which the energy and mass may leave or enter






10. A solution that resists a change in its pH






11. OH¹?






12. Driving force of the electrons






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






14. n+m (these are orders of reactants)






15. Neutralization Reaction (general format) (net ionic of which is always (H+) + (OH-) --> (H2O))






16. IMF that exists in polar molecules






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






18. Mol/L - concentration of a solution






19. This MUST be determined experimentally






20. Mols A/ total mols - XA






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






22. Puts OH? into solution






23. Uses a spontaneous redox rxn to generate electrical energy - consists of 2 half cells






24. Solid to gas






25. Substances that form H+ when dissolved in water; proton donors






26. AX5






27. Planck's constant - used to calculate energy w/frequency






28. Describe various properties of one orbital






29. Where oxidation occurs






30. K=[C]^l[D]^m/[A]^j[B]^k; products/reactants; solids don't count






31. 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






32. Ending for alcohols






33. (organics) eight carbons






34. Kinetic Energy per molecule






35. Ecell= E°cell -RT/nF x lnQ






36. Amine prefix






37. Expresses how the concentrations depend on time






38. The reactant in the oxidizing reaction that forces the reduction reaction to occur






39. Aldehyde suffix






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






41. Pressure Units/Conversions






42. Oxidation # of Oxygen






43. The intermolecular attractions resulting from the constant motion of electrons and the creation of instantaneous dipoles






44. Nonmetal oxide + H2O ->






45. Hydroxides are soluble or insoluble?






46. Reverse rxn occurs when






47. NO2¹?






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






49. Has values 1 -2 -3 -...; tells energy levels






50. An equilibrium expression