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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. Oxidation # of free elements






2. Reverse rxn occurs when






3. Where oxidation occurs






4. 109.5° - sp^3






5. Mass percent






6. 760 mmHg - 760 torr






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






8. Connects the 2 half cells in a voltaic cell






9. In a given atom no two electrons can have the same set of four quantum numbers






10. Pairs of electrons localized on an atom






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






12. Ionizes to produce OH- Ions






13. AX4E2






14. 0°C and 1 atm






15. When n=6 ->2 - color=






16. Expresses how the concentrations depend on time






17. (A) - C/s






18. Group 1 and heavier Group 2 bases






19. 1 sigma bond - 2 pi bonds






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






21. 760mmHg/Torr






22. Substances above the critical temperature and pressure in which the pressure is so high that density and flowing ability of a "gas" resembles that of a liquid






23. Resistance to flow






24. Speed per molecule of gas






25. q H2O = ?






26. When _____ significant digits - round answer to least significant digit






27. The energy required to raise 1 g of substance 1 degree C






28. Increase Volume






29. Studies the rate at which a chemical process occurs and sheds light on its reaction mechanism






30. Larger molecules which have higher mass and therefore electron density have stronger...






31. Atoms with the same number of protons but a different number of neutrons






32. Elements in groups 3-12






33. How to Find an Empirical Formula Given Percentages






34. OIL RIG






35. Color of Li (flame test)






36. Group 1 metals






37. (organics) six carbons






38. Newton's Second Law






39. AX4E






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






41. C=2.9979*10^8 m/s






42. U(rms)=(3RT/M)^1/2






43. pH=






44. AX5E






45. Substances that form OH- when dissolved in water; proton acceptors






46. Temperature-pressure combination at which solid - liquid - and gas states appear






47. Energy required for liquid?gas






48. The transfer of energy between two objects due to temperature difference






49. Color of Cs (flame test)






50. A solid or gas that can be formed when 2 or more aqueous reactants come together