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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. #NAME?






2. Molality =






3. Phase change from gas to solid






4. If needed - indicate charge of metal(cation) by...






5. These orbitals are perpendicular






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






7. Increase Pressure






8. Change that occurs at constant temperature






9. Has values from 0 to (n-1); tells shape of atomic orbitals






10. STP






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






12. Has values from -l to l - including zero; tells orientation of the orbital relative to other orbitals






13. Energy needed to vaporize a mole of a liquid






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






15. H?+NH3?NH4






16. Liquid to gas






17. Polyatomic Ions (bonding)






18. Symbol for Total Heat absorbed or released






19. Substances w/ critical temperatures below 25°C






20. AX5E






21. (organics) double-bonded compound






22. (organics) ten carbons






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






24. 1 sigma bond






25. Type of system in which the energy and mass may leave or enter






26. E=mc^2






27. ClO4¹?






28. When n=3 ->2 - color=






29. Carbon - hydrogen - oxygen compounds






30. Mols A/ total mols - XA






31. Electrons in a hydrogen atom move around the nucleus only in circular orbits






32. Non-Ideal Gas Conditions






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






34. 1.Calculate moles of each atom in molecule 2.Divide each mole number by smallest mole number 3.If necessary - multiply every mole number to get a whole number 4.Moles of each atom is subscript in empirical formula






35. Specific heat of water






36. CO3²?






37. If Q<Ksp






38. Does the same as equilibrium expression - except it uses initial concentrations






39. (# of lone pair e-)+1/2(# of shared e-)






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






41. Different form of same element






42. ... compounds are most conductive






43. C2O4²?






44. 1/[A] vs. time is a ...-order reaction






45. Where there are no electrons






46. Rate of Diffusion/Effusion formula






47. The reactant in the oxidizing reaction that forces the reduction reaction to occur






48. AX3E2






49. These orbitals are diagonal






50. AX2E - AX2E2