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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. For significant digits - trailing zeros _____ significant






2. Significant Digits of counted things






3. Hydroxides are soluble or insoluble?






4. Liquid to gas






5. Loss of electrons - increase in oxidation #






6. Speed per molecule of gas






7. (# of valence e- on free atom) - (# of valence e- assigned to atom in molecule)






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






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






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






11. Positive ion






12. Chemical composition of dry ice






13. 1/([A]0*k)






14. Faraday's constant






15. The reactant that is being oxidized - brings about reduction






16. All (though really not all - but for our purposes all) ________ compounds are NOT electrolytes






17. Variable for type of orbital






18. Group 1 and heavier Group 2 bases






19. Elements on staircase on periodic table






20. Change that occurs at constant temperature






21. Actual Yield/Theoretical Yield*100%






22. All forms of energy except for heat






23. Reactant that's completely used up in a chemical reaction






24. J/°Cmol or J/Kmol






25. 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)






26. Puts H? into solution






27. Ionizes to produce OH- Ions






28. A neutral molecule/ion having a lone e- pair that can be used to form a bond to a metal ion






29. Cr2O7²?






30. Change in Energy = ? (in terms of constant pressure; for gasses)






31. ln[A]=-kt + ln[A]0






32. Resistance to flow






33. Colors of Reaction when (MnO4 -) --> (Mn2+)






34. 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






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






36. =vM2/M1






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






38. Change in moles (An) =?






39. Passage of gas through tiny orifice






40. 1/[A]=kt + 1/[A]0






41. (organics) four carbons






42. q cal = ?






43. Compound in which there is a bond between two non-metals; when naming them you use the numerical prefixes (may NOT be reduced i.e. S2F4 may not become SF2)






44. AX6






45. Mol/kg of solvent - used in calculating colligative properties






46. Average speed of gas






47. Where oxidation occurs






48. Proton (symbol)






49. Volume of gas @STP






50. Occupies the space above and below a sigma bond