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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 lowest energy configuration for an atom is the one having the max number of unpaired electrons allowed by the Pauli principle in a set of degenerate orbitals

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2. kf of water






3. l=2






4. Unit of electrical potential; J/C






5. When gas expands ...






6. Spontaneous emission of radiation






7. Mass percent






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






9. Positive enthalpy - heat flows into system






10. C2H3O2¹?






11. Molarity (M)






12. Half cell in which reduction occurs






13. A measure of resistance of an object to a change in its state of motion






14. ... compounds are most conductive






15. Point at which the titrated solution changes color






16. Gas to solid






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






18. Heat capacity formula






19. 180° - sp






20. When n=4 ->2 - color=






21. Mass/volume






22. Polyatomic Ions (bonding)






23. How fast or slow a reaction occurs - becomes slower as it reaches equilibrium






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

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25. % yield






26. If a system @equilibrium is stressed - the system will shift so as to reestablish equilibrium

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






28. We cannot simultaneously determine an atom's exact path or location






29. SI unit of energy; Kg*m^2/s^2






30. 0.00°C - 1 atm






31. #NAME?






32. AX5E






33. The total entropy is always increasing - all systems tend towards maximum entropy






34. A molecule having a center of positive charge and a center of negative charge






35. Phase change from gas to solid






36. Energy required for melting to occur






37. These orbitals are perpendicular






38. Proton donors






39. Average speed of gas






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






41. (organics) three carbons






42. AX6






43. Atoms combine in fixed whole # ratios






44. Verticals on the periodic table






45. Half cell in which oxidation occurs






46. The mixing of native atomic orbitals to form special orbitals for bonding






47. Change in moles (An) =?






48. Composition Formula






49. Molality =






50. r=k[A]