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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. Heat needed to change 1 g of substance to 1°C






2. If anion ends in -ate - acid name ends in...






3. Anything occupying space and with mass






4. AX4E2






5. Cr2O7²?






6. Oxidation # of Ions






7. 90° - d^2sp^3






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






9. CO3²?






10. Henry's Law - solubility of gases is directly proportional to the partial pressure of the gas






11. r=k[A]^2






12. Point at which the titrated solution changes color






13. E?s fill the lowest energy orbital first - then work their way up






14. A monoatomic anion is named by taking...






15. Delta H (AH) = ?






16. Change in Energy (AE) = ? (in terms of work)






17. Loss of electrons - increase in oxidation #






18. Substances that form H+ when dissolved in water; proton donors






19. ClO3²?






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






21. Instrument used to measure the pressure of a not-atmospheric gas (open or closed system)






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






23. Force that holds atoms together






24. q cal = ?






25. Ka=[products]^m/[reactants]^n






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






27. [A]0/2k






28. Change without heat transfer between the system and its surroundings






29. The total energy of the universe is constant - all systems tend towards minimum energy






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






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






32. Half-life equation






33. Hydroxides are soluble or insoluble?






34. Carboxylic acid ending






35. The actual amount of product produced in an experiment






36. Positive ion






37. Mol/kg of solvent - used in calculating colligative properties






38. Boiling point elevation formula






39. q rxn = ?






40. Gain of electrons - decrease in oxidation #






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






42. A device used to measure Delta H






43. Energy required for melting to occur






44. Within a sublevel - place one e? per orbital before pairing them

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45. The likelihood that a rxn will occur "by itself"






46. AX3






47. How to Find an Empirical Formula Given Percentages






48. A homogeneous mixture with 1 phase






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






50. Half cell in which oxidation occurs