Test your basic knowledge |

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. Pairs of electrons localized on an atom






2. Rate of Diffusion/Effusion formula






3. Amount of heat needed to change a system by 1°C






4. frequency symbol






5. A homogeneous mixture with 1 phase






6. AX4E






7. Thickness






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






9. Degree of disorder in a system






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






11. Amount of gravitational force exerted on an object






12. Atoms combine in fixed whole # ratios






13. A solution that resists a change in its pH






14. Substances w/ critical temperatures below 25°C






15. Carbonates - Hydroxides - Oxides - Phosphates - Sulfides






16. If heat capacity isn't mentioned - you can assume that q of cal is = ?






17. Change in moles (An) =?






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






19. C2H3O2¹?






20. Verticals on the periodic table






21. Unusually strong dipole forces found when H is bonded to N - O - or F






22. Point at which the titrated solution changes color






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






24. Resistance to flow






25. O²?






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






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






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






29. kf of water






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






31. Osmotic pressure=MRT






32. 1/[A]=kt + 1/[A]0






33. Increase Volume






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






35. IMF that occurs with FON






36. The driving force for a spontaneous is an increase in entropy of the universe






37. AX4






38. Instrument used to measure the pressure of atmospheric gas






39. Newton's Second Law






40. AX3E2






41. Electron pairs found in the space between the atoms






42. Group 1 metals






43. Idea Gas Law (actual rules)






44. (# of valence e- on free atom) - (# of valence e- assigned to atom in molecule)






45. J/°Cmol or J/Kmol






46. Color of Ca (flame test)






47. Substance that - when dissolved - is conductive






48. Elements on staircase on periodic table






49. Elements which have all electrons paired and relatively unaffected by magnetic fields






50. Similar to atomic orbitals - except between molecules