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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. Moles of solute/volume of soln(L)






2. (organics) eight carbons






3. Substances w/ critical temperatures below 25°C






4. CrO4²?






5. Atomic #






6. When more than one valid Lewis structure can be written for a particular molecule; represented by double-headed arrows






7. r=k






8. AX4






9. Rate of Diffusion/Effusion formula






10. The lowest energy configuration for an atom is the one having the max number of unpaired electrons allowed by the Pauli principle in a set of degenerate orbitals

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






12. 1 sigma bond - 2 pi bonds






13. J/°Cmol or J/Kmol






14. (organics) two carbons






15. Oxidation # of free elements






16. Oxidation # of Polyatomic Ions






17. Liquid to solid






18. Expresses how the concentrations depend on time






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






20. 90°&120° - dsp^3






21. When n=3 ->2 - color=






22. negative ion






23. (A) - C/s






24. The entropy of a pure perfectly formed crystal @0K is 0






25. Mass reactants= mass products






26. Phase change from gas to solid






27. (organics) triple-bonded compound






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






29. [A]0/2k






30. AP doesn't deal with ...-order reaction - don't pick it!






31. Mass/volume






32. An equilibrium expression






33. In going from a particular set of reactants to a particular set of products - the change in enthalpy is the same whether the reaction takes place in one step or in a series of steps

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34. Compound in which there is a bond between a metal and a non-metal; when naming - pay attention to ionic charges on periodic table (may be reduced)






35. Energy needed to break a bond






36. Energy required to break a bond






37. Average Kinetic Energy Formula






38. Organic reaction in which water breaks apart a molecule (splitting into two hydroxides)






39. Puts OH? into solution






40. Positive enthalpy - heat flows into system






41. Proton donors






42. Solid to gas






43. AX3E2






44. Increase Volume






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






46. Two molecules with identical connectivity but different geometries






47. Involves quantum numbers






48. Heat capacity formula






49. Spontaneous emission of radiation






50. Atoms combine in fixed whole # ratios