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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. J/°Cmol or J/Kmol






2. Phase change from solid to gas






3. Color of Cs (flame test)






4. Oxidation # of Ions






5. Symbol for Total Heat absorbed or released






6. C2O4²?






7. AX5E






8. PO4³?






9. Reverse rxn occurs when






10. (# of valence e- on free atom) - (# of valence e- assigned to atom in molecule)






11. Oxidation # of Polyatomic Ions






12. The weight exerted by a column of air or the pressure exerted by the Earth's atmosphere






13. E=mc^2






14. AX3E2






15. Experimental yield/theoretical yieldx100






16. Mixing of gases






17. Energy required to break a bond






18. Energy needed to vaporize a mole of a liquid






19. When _____ significant digits - round answer to least significant digit






20. Average speed of gas






21. Coffee Cup Calorimeter






22. A monoatomic anion is named by taking...






23. R=






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






25. Does the same as equilibrium expression - except it uses initial concentrations






26. Oxidation # of free elements






27. How to Find an Empirical Formula Given Grams






28. (organics) two carbons






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






30. Liquid to gas






31. Chemical composition of dry ice






32. =vM2/M1






33. Loss of electrons - increase in oxidation #






34. Forward rxn occurs when






35. A measure of resistance of an object to a change in its state of motion






36. Effusion of a gas is inversely proportional to the square root of the molar mass

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37. The line running between the atoms






38. (organics) six carbons






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






40. Molecules' tendency to stick to the container






41. 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






42. Kinetic Energy per mol






43. OIL RIG






44. O²?






45. Elements on staircase on periodic table






46. Kinetic Energy is proportional to ______






47. If anion ends in -ite - acid name ends in...






48. AX4E






49. AH of formation for a substance in its stablest form (how it is found in nature)






50. Half-life equation







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