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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. Speed of Diffusion/Effusion formula






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






3. J/°Cmol or J/Kmol






4. OH¹?






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






6. Phase change from gas to solid






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






8. Average speed of gas






9. Color of Ba (flame test)






10. (organics) four carbons






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






12. Resistance to flow






13. q cal = ?






14. Mols A/ total mols - XA






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






16. (A) - C/s






17. 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)






18. For significant digits - trailing zeros _____ significant






19. r=k






20. R in instances that pertain to energy






21. For colligative properties for electrolytes - the # of mols of ions/ mols of solute

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22. 1 sigma bond - 2 pi bonds






23. 0.00°C - 1 atm






24. R=






25. Pairs of electrons localized on an atom






26. AX5E






27. For significant digits - leading zeros ____ significant






28. Puts OH? into solution






29. IMF that exists in polar molecules






30. Liquid to gas






31. Within a sublevel - place one e? per orbital before pairing them

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32. These orbitals are perpendicular






33. (organics) one carbon






34. Proton donors






35. I=moles of particles/moles of solute dissolved

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






37. neutron (symbol)






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






39. High-speed electrons






40. Measure of the average kinetic energy of all the particles in a substance






41. Heat needed to change 1 g of substance to 1°C






42. CrO4²?






43. (organics) ten carbons






44. Change in Energy (AE) = ? (in terms of work)






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






46. Horizontals on the periodic table






47. PO4³?






48. Solution used in titration






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






50. r=k[A]^2