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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. Spectrum of light when an electron drops to energy level n=2






2. Color of Ca (flame test)






3. Osmotic pressure=MRT






4. neutron (symbol)






5. Expresses how the concentrations depend on time






6. Puts OH? into solution






7. Reactant that's completely used up in a chemical reaction






8. Gas to liquid






9. Where oxidation occurs






10. H?+NH3?NH4






11. Increase Pressure






12. #NAME?






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






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






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






16. Significant Digits of Conversion Factors






17. Point at which solid?liquid occurs






18. Assumes that a molecule is composed of atoms that are bound together by sharing pairs of electrons using the atomic orbitals of the bound atoms






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






20. The reactant in the oxidizing reaction that forces the reduction reaction to occur






21. Resistance to flow






22. (organics) nine carbons






23. Mass #






24. Positive enthalpy - heat flows into system






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






26. Kinetic Energy per mol






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






28. Color of Ba (flame test)






29. Absorbs/takes in heat (positive value)






30. Liquid to gas






31. If Q<Ksp






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






33. A single substance that may be an acid or a base (i.e. water)






34. Molarity (M)






35. Energy needed to vaporize a mole of a liquid






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






37. E=mc^2






38. The minimum energy that molecules must possess for collisions to be effective - Ea






39. Variable for energy of e- - goes from 1 -2 -3 on up






40. AX6






41. Actual Yield/Theoretical Yield*100%






42. To find activation energy use the...






43. Pressure Units/Conversions






44. AX4






45. Liquid to solid






46. Spontaneous emission of radiation






47. Planck's constant - used to calculate energy w/frequency






48. AX3E






49. Raoult's Law - relations between vapor pressure and concentrations






50. Matter can't be created nor destroyed







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