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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. Atoms combine in fixed whole # ratios






2. Involves quantum numbers






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






4. Average Kinetic Energy Formula






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






6. The measurement of heat changes






7. When n=4 ->2 - color=






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






9. Ether prefix






10. Where reduction occurs






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






12. The lowest energy configuration for an atom is the one having the max number of unpaired electrons allowed by the Pauli principle in a set of degenerate orbitals

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13. For significant digits - leading zeros ____ significant






14. Different form of same element






15. Hydroxides are soluble or insoluble?






16. To find activation energy use the...






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






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






19. 96 -485 C/mol e-






20. Organic w/ -NH2






21. Molality =






22. (N) number of equivalents per liter of solution






23. Liquid to solid






24. In going from a particular set of reactants to a particular set of products - the change in enthalpy is the same whether the reaction takes place in one step or in a series of steps

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25. All _________ compounds are electrolytes






26. NO2¹?






27. Bomb Calorimeter






28. Solid to liquid






29. Idea Gas Law (actual rules)






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






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






32. A solution that resists a change in pH - contains both a weak acid and its conjugate base






33. The total entropy is always increasing - all systems tend towards maximum entropy






34. Gas to solid






35. Liquid to gas






36. How to Find an Empirical Formula Given Percentages






37. AX4E






38. n+m (these are orders of reactants)






39. Nonmetal oxide + H2O ->






40. Dirrect Method Formula






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






42. Unit of electrical potential; J/C






43. R=






44. If Q>Ksp






45. ?T=k*m(solute)






46. Has values from -l to l - including zero; tells orientation of the orbital relative to other orbitals






47. As protons are added to the nucleus - electrons are similarly added






48. AP doesn't deal with ...-order reaction - don't pick it!






49. Variable for type of orbital






50. This MUST be determined experimentally