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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. The intermolecular attractions resulting from the constant motion of electrons and the creation of instantaneous dipoles






3. Lowers activation energy






4. Atomic #






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






6. Gas to solid






7. q cal = ?






8. When two elements form a series of compounds - the ratios of the masses of the second element that combine with 1g of the first element can always be reduced to whole numbers






9. Formula used when diluting stock solution (to find amount of water or stock needed)






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






11. Melting






12. The heat changed in a chemical reaction.






13. High-speed electrons






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






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






16. Increase Pressure






17. A method of investigation involving observation and theory to test scientific hypotheses






18. ln[A]=-kt + ln[A]0






19. q H2O = ?






20. An equilibrium expression






21. Faraday's constant






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. Gas to liquid






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






25. H+ Acceptor






26. Amount of product produced when limiting reactant is used up






27. q rxn = ?






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






29. Amine prefix






30. Substance in which something is dissolved in a solution (higher [ ])






31. ln[A] vs. time is a ...-order reaction






32. Universal IMF for nonpolar molecules






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






34. Pressure Units/Conversions






35. Speed of Diffusion/Effusion formula






36. If a system @equilibrium is stressed - the system will shift so as to reestablish equilibrium

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37. Group 1 metals






38. Organic reaction in which water breaks apart a molecule (splitting into two hydroxides)






39. Coffee Cup Calorimeter






40. AX3E2






41. A molecule having a center of positive charge and a center of negative charge






42. All forms of energy except for heat






43. Increase Volume






44. A monoatomic cation takes name from...






45. Liquid to solid






46. (organics) six carbons






47. Molality =






48. Variable for type of orbital






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






50. For colligative properties for electrolytes - the # of mols of ions/ mols of solute

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