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






2. Type of system in which nothing is transfered (no mass or energy); ideal






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






4. (organics) four carbons






5. Organic w/ -NH2






6. Gas to liquid






7. Color of Ba (flame test)






8. How to Find an Empirical Formula Given Grams






9. Peak of energy diagram






10. This MUST be determined experimentally






11. Oxidation # of Oxygen






12. In ideal gas law problem - when it says "atmospheric" ...






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






14. Phase change from gas to solid






15. (organics) one carbon






16. K






17. Ketone suffix






18. Symbol for Total Heat absorbed or released






19. frequency symbol






20. The minimum energy that molecules must possess for collisions to be effective - Ea






21. Ecell= E°cell -RT/nF x lnQ






22. 1.Volume of individual particles can be assumed to be zero 2.The particles are in constant motion - which causes pressure 3.Particles exert no forces on each other 4.The average kinetic energy of the particles is directly affected by temperature(K)






23. (organics) ten carbons






24. For significant digits - leading zeros ____ significant






25. Stronger IMF= lower... weaker IMF= higher...






26. Forward rxn occurs when






27. Phase change from solid to gas






28. Color of Na (flame test)






29. Vapor pressure lowering - boiling point elevation - freezing point depression - osmotic pressure






30. If K<1 - then Gº>0 and reaction will be...at chemical equilibrium






31. Composition Formula






32. Substance that - when dissolved - is conductive






33. Positive enthalpy - heat flows into system






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






35. Elements on staircase on periodic table






36. AX5






37. Universal IMF for nonpolar molecules






38. q cal = ?






39. Half cell in which reduction occurs






40. Mass/volume






41. Proton (symbol)






42. Coffee Cup Calorimeter






43. (organics) nine carbons






44. (msubs) Can only be +1/2 or -1/2






45. Bomb Calorimeter






46. 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






47. When n=5 ->2 - color=






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






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






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