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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. AX5E






2. Kinetic Energy per mol






3. The heat changed in a chemical reaction.






4. Matter can't be created nor destroyed






5. 96 -485 C/mol e-






6. Instrument used to measure the pressure of atmospheric gas






7. Significant Digits of counted things






8. Dalton's Law of Partial Pressures (to find partial pressure formula)






9. If Q<Ksp






10. 0C and 1 atm






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






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






13. (organics) nine carbons






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






15. 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






16. Releases/gives off heat (negative value)






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






18. Force that holds atoms together






19. Two molecules with identical connectivity but different geometries






20. Oxidation # of Ions






21. Elements which have unpaired electrons and highly affected by magnetic fields






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






23. Color of Ba (flame test)






24. In a titration - the point where moles of acid are equal to moles of base (just before the indicator changes color)






25. In covalent bonds - prefixes are used to tell...






26. Puts OH? into solution






27. Half-life equation






28. All (though really not all - but for our purposes all) ________ compounds are NOT electrolytes






29. 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






30. Color of Ca (flame test)






31. Coffee Cup Calorimeter






32. Atomic #






33. When more than one valid Lewis structure can be written for a particular molecule; represented by double-headed arrows






34. Phase change from solid to gas






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






36. (organics) five carbons






37. K






38. This MUST be determined experimentally






39. C2O4?






40. 2 or more covalently bonded atoms






41. CO3?






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






43. To find activation energy use the...






44. Combined Gas Law Formula






45. Measure of the average kinetic energy of all the particles in a substance






46. Instrument used to measure the pressure of a not-atmospheric gas (open or closed system)






47. When n=3 ->2 - color=






48. Heat needed to change 1 g of substance to 1C






49. Average Kinetic Energy Formula






50. A device in which chemical energy is changed to electrical energy