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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. The transfer of energy between two objects due to temperature difference






2. 180° - sp






3. Different form of same element






4. Electron pairs found in the space between the atoms






5. Speed per molecule of gas






6. The line running between the atoms






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






8. (organics) nine carbons






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






10. Bond bond in which atoms aren't so different that electrons are completely transferred but are different enough that unequal sharing occurs






11. Electron (symbol)






12. Heat required to raise the system 1°C






13. All _________ compounds are electrolytes






14. Substance that - when dissolved - is conductive






15. Mass reactants= mass products






16. How to Find an Empirical Formula Given Grams






17. Passage of gas through tiny orifice






18. Chemical composition of dry ice






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






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






21. Pressure Units/Conversions






22. (organics) five carbons






23. % yield






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






25. These orbitals are perpendicular






26. Amine prefix






27. Proton donors






28. Gain of electrons - decrease in oxidation #






29. Theoretical yield-experimental yield/theoretical yieldx100






30. Ptotal=P1+P2+P3+...

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31. Half cell in which reduction occurs






32. A solution that resists a change in its pH






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






34. Color of Na (flame test)






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






36. Average Kinetic Energy Formula






37. Within a sublevel - place one e? per orbital before pairing them

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38. Force that holds atoms together






39. Color of Li (flame test)






40. Aldehyde suffix






41. In a given atom no two electrons can have the same set of four quantum numbers






42. F¹?






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






44. Mols A/ total mols - XA






45. (organics) two carbons






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






47. Unusually strong dipole forces found when H is bonded to N - O - or F






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






49. Matter can't be created nor destroyed






50. What is defined by you taken from the whole universe