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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. 760 mmHg - 760 torr






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






3. Delta H (AH) = ?






4. J/°Cg or J/Kg






5. R=






6. Energy (definition)






7. PO4³?






8. Cation first - anion second






9. Change that occurs at constant temperature






10. K=[C]^l[D]^m/[A]^j[B]^k; products/reactants; solids don't count






11. 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)






12. q rxn = ?






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






14. 0°C and 1 atm






15. Substances w/ critical temperatures below 25°C






16. C2O4²?






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






18. 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)






19. NH4¹?






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






21. Increase Volume






22. Polyatomic Ions (bonding)






23. All forms of energy except for heat






24. Positive ion






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






26. Speed of Diffusion/Effusion formula






27. PV=nRT






28. A homogeneous mixture with 1 phase






29. (organics) three carbons






30. Color of Ba (flame test)






31. The amount of energy/heat required to raise some substance 1 degree C






32. Melting






33. Connects the 2 half cells in a voltaic cell






34. If Q>Ksp






35. 1 sigma bond






36. These orbitals are diagonal






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






38. Bond bond in which atoms aren't so different that electrons are completely transferred but are different enough that unequal sharing occurs






39. ClO2¹?






40. Color of Na (flame test)






41. ClO4¹?






42. (organics) eight carbons






43. ?H when 1 mol of bonds is broken in the gaseous state






44. Color of Cs (flame test)






45. High-energy light






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






47. Like dissolves...






48. Group 2 metals






49. Atomic #






50. AX3E