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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. Larger molecules which have higher mass and therefore electron density have stronger...






2. PO4³?






3. pH=






4. neutron (symbol)






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






6. If Q>Ksp






7. An equilibrium expression






8. (organics) three carbons






9. AX2E - AX2E2






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






11. H?+OH??H2O






12. Where reduction occurs






13. Variable for spin of electron (+.5 or -.5)






14. A solution that resists a change in pH - contains both a weak acid and its conjugate base






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






16. R=






17. q rxn = ?






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






19. Passage of gas through tiny orifice






20. Happens at lines in phase change charts






21. Henry's Law - solubility of gases is directly proportional to the partial pressure of the gas






22. Pairs of electrons localized on an atom






23. J/°Cmol or J/Kmol






24. Reverse rxn occurs when






25. Generally insoluble anions (names)






26. Variable for type of orbital






27. Coffee Cup Calorimeter






28. Stronger IMF= lower... weaker IMF= higher...






29. Oxidation # of free elements






30. r=k[A]^2






31. Weakest IMFs - found in all molecules






32. States molecules at a given temp. vary in kinetic energy along a bell-curve of molecular velocities






33. Force acting over distance






34. (organics) two carbons






35. MnO4¹?






36. Anything occupying space and with mass






37. [A]=-kt + [A]0






38. (A) - C/s






39. Delta H (AH) = ?






40. (organics) six carbons






41. Ability of an atom in a molecule to attract shared electrons to itself






42. Mass percent






43. Expresses how the concentrations depend on time






44. Mass reactants= mass products






45. R in ideal gas law






46. Assumes that a molecule is composed of atoms that are bound together by sharing pairs of electrons using the atomic orbitals of the bound atoms






47. Energy needed to break a bond






48. kb of water






49. Kinetic Energy per mol






50. Idea Gas Law (actual rules)