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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. Polyatomic Ions (bonding)






2. 1/[A]=kt + 1/[A]0






3. Oxidation # of Halogens






4. Negative enthalpy - heat flows into surroundings






5. The total entropy is always increasing - all systems tend towards maximum entropy






6. AX6






7. Force per unit area






8. Experimental yield/theoretical yieldx100






9. Organic w/ -OH group






10. Arrhenius equation






11. Carbonates - Hydroxides - Oxides - Phosphates - Sulfides






12. H + donor






13. AX3






14. NH4¹?






15. Weakest IMFs - found in all molecules






16. Theoretical yield-experimental yield/theoretical yieldx100






17. J/°Cmol or J/Kmol






18. q rxn = ?






19. An element with several different forms - each with different properties (i.e. graphite & diamond)






20. If anion ends in -ite - acid name ends in...






21. frequency symbol






22. Point at which the titrated solution changes color






23. K






24. When _____ significant digits - round answer to least significant digit






25. As protons are added to the nucleus - electrons are similarly added






26. NO2¹?






27. l=1






28. Substances w/ critical temperatures below 25°C






29. All forms of energy except for heat






30. Substance that - when dissolved - is conductive






31. Osmotic pressure formula






32. 1 sigma bond






33. 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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34. Only contains ions that change in reaction






35. Where reduction occurs






36. A solution that resists a change in its pH






37. HCl - HBr - HI - HNO3 - HClO4 - H2SO4






38. Atoms with the same number of protons but a different number of neutrons






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






40. If a change is imposed on a system at equilibrium - the position of the equilibrium will shift in a direction that tends to reduce that change

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41. AH of formation for a substance in its stablest form (how it is found in nature)






42. Kinetic Energy is proportional to ______






43. Gas to liquid






44. ClO3²?






45. (# of lone pair e-)+1/2(# of shared e-)






46. # bonding e- - # antibonding e-/2






47. Actual Yield/Theoretical Yield*100%






48. 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






49. Variable for orientation of orbital (-1 through +1)






50. Point at which liquid?gas occurs







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