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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. When more than one valid Lewis structure can be written for a particular molecule; represented by double-headed arrows






2. q rxn = ?






3. Melting






4. (organics) six carbons






5. Combined Gas Law Formula






6. Transition metals with ammonia - hydroxide - cyanide or thiocyanate form...






7. Boltzmann constant - used in calculating speed of gas per molecule






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






9. AX5






10. 96 -485 C/mol e-






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






12. J/°Cmol or J/Kmol






13. Group 1 metals






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






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






16. Polyatomic Ions (bonding)






17. Ionizes to produce H+ ions






18. 6.022x10^23






19. Mass percent






20. Average speed of gas






21. Two molecules with identical connectivity but different geometries






22. Unit of electrical potential; J/C






23. Occupies the space above and below a sigma bond






24. Elements on staircase on periodic table






25. Mols A/ total mols - XA






26. A measure of randomness or disorder






27. kb of water






28. Mol/L - concentration of a solution






29. Each orbital can hold two e?s each w/ opposite spins






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






31. 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)






32. CN¹?






33. AX5E






34. Type of system in which the energy may escape - but the mass is conserved






35. Change in Energy = ? (in terms of constant pressure; for gasses)






36. Donates a single H+ Ion (... other prefixes also)






37. Atoms combine in fixed whole # ratios






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






39. Similar to atomic orbitals - except between molecules






40. Type of system in which nothing is transfered (no mass or energy); ideal






41. Oxidation # of free elements






42. The measurement of heat changes






43. Increase Pressure






44. Different form of same element






45. Electron (symbol)






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






47. Gas to liquid






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






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






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