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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. For significant digits - leading zeros ____ significant






2. F¹?






3. Gain of electrons - decrease in oxidation #






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






5. Point at which vapor pressure=air pressure above






6. Cr2O7²?






7. Substance being dissolved in a solution (lower [ ])






8. l=3






9. Energy required for liquid?gas






10. Chemical composition of dry ice






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






12. How to Find a Weighted Average






13. Elements on staircase on periodic table






14. Different form of same element






15. 1.Volume of individual particles can be assumed to be zero 2.The particles are in constant motion - which causes pressure 3.Particles exert no forces on each other 4.The average kinetic energy of the particles is directly affected by temperature(K)






16. (organics) seven carbons






17. Pressure Units/Conversions






18. Kinetic Energy is proportional to ______






19. If anion ends in -ite - acid name ends in...






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






21. Oxidation # of Oxygen






22. Function in which it doesn't matter HOW the changes take place - only that they do; you can use to formula Final - Initial ( i.e. energy - pressure - volume - temperature - sort of moles)






23. Newton's Second Law






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






25. q H2O = ?






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






27. Color of K (flame test)






28. Energy can't be created nor destroyed






29. Atomic #






30. Instrument used to measure the pressure of atmospheric gas






31. Lowers activation energy






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






33. x can be ignored when % ionization is <5%






34. Happens at lines in phase change charts






35. J/°Cmol or J/Kmol






36. Neutralization Reaction (general format) (net ionic of which is always (H+) + (OH-) --> (H2O))






37. Energy involved in gaining an electron to become a negative ion






38. Occupies the space above and below a sigma bond






39. Puts H? into solution






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






41. K






42. The weight exerted by a column of air or the pressure exerted by the Earth's atmosphere






43. AX4E2






44. Organic reaction in which two functional groups come together - resulting in the release of water






45. Amount of gravitational force exerted on an object






46. 760 mmHg - 760 torr






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






48. Symbol for Total Heat absorbed or released






49. Stronger IMF= lower... weaker IMF= higher...






50. [A]0/2k