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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. How to Find an Empirical Formula Given Percentages






2. Different form of same element






3. Only contains ions that change in reaction






4. Change that occurs at constant temperature






5. Combined Gas Law Formula






6. l=1






7. STP






8. The rest of the universe (in thermodynamics)






9. PV=nRT






10. Phase change from solid to gas






11. Mol/L - concentration of a solution






12. Organic reaction in which water breaks apart a molecule (splitting into two hydroxides)






13. A device in which chemical energy is changed to electrical energy






14. When ____ significant digits - round answer to least decimal place






15. Pairs of electrons localized on an atom






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






17. Loss of electrons - increase in oxidation #






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






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






20. Everything in the universe that is not defined by you as part of the system






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






22. Raoult's Law - relations between vapor pressure and concentrations






23. BrO3¹?






24. The chemical formed when an acid donates a proton






25. Weakest IMFs - found in all molecules






26. AX3E2






27. Forward rxn occurs when






28. Ending for alcohols






29. These orbitals are perpendicular






30. Half cell in which oxidation occurs






31. 6.022x10^23






32. Elements which have unpaired electrons and highly affected by magnetic fields






33. (organics) five carbons






34. Color of Li (flame test)






35. If anion ends in -ide - acid name ends in






36. Molarity (M)






37. 109.5° - sp^3






38. The reactant that is being reduced - brings about oxidation






39. Calculation from K to C






40. 1 sigma bond - 2 pi bonds






41. Symbol for the heat absorbed or lost molecularly (PER MOLE)






42. Proton acceptors - must have an unshared pair of e?s






43. Solution used in titration






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






45. Carbon & hydrogen compounds






46. Speed per molecule of gas






47. AX6






48. Reactant which doesn't get used up completely in a chemical reaction






49. Thickness






50. Aldehyde suffix