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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. Gain of electrons - decrease in oxidation #






2. Colors of Reaction when (Cr2O7 2-) --> (Cr 3+)






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






4. r=k






5. AX4E2






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






7. If anion ends in -ate - acid name ends in...






8. (organics) double-bonded compound






9. Cr2O7²?






10. Oxidation # of Compounds






11. AX4E






12. AX3E2






13. Substance that - when dissolved - is conductive






14. AX4E






15. [A] vs. time is a ...-order reaction






16. Ionizes to produce OH- Ions






17. R=






18. The weighted average of all the isotopes that an atom can have (in g/mol)






19. States molecules at a given temp. vary in kinetic energy along a bell-curve of molecular velocities






20. Newton's Second Law






21. Determined by the formula h/m(in kg)v - (v=velocity)






22. When gas compresses ...






23. Mole Fraction






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






25. Average speed of gas






26. CrO4²?






27. Similar to atomic orbitals - except between molecules






28. When gas expands ...






29. 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)






30. Compound in which there is a bond between a metal and a non-metal; when naming - pay attention to ionic charges on periodic table (may be reduced)






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






32. Force acting over distance






33. The line running between the atoms






34. A device used to measure Delta H






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






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






37. Actual Yield/Theoretical Yield*100%






38. Absorbs/takes in heat (positive value)






39. ?H when 1 mol of bonds is broken in the gaseous state






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






41. Work = ?






42. Releases/gives off heat (negative value)






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






44. AX6






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






46. Amount of gravitational force exerted on an object






47. Pressure Units/Conversions






48. Positive ion






49. Electrons in a hydrogen atom move around the nucleus only in circular orbits






50. AX4