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






2. NO3¹?






3. (organics) double-bonded compound






4. Increase Volume






5. In going from a particular set of reactants to a particular set of products - the change in enthalpy is the same whether the reaction takes place in one step or in a series of steps

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6. How fast or slow a reaction occurs - becomes slower as it reaches equilibrium






7. When n=6 ->2 - color=






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






9. HF+ OH??H2O






10. Cr2O7²?






11. Entropy in the universe is always...






12. Expresses how the concentrations depend on time






13. Oxidation # of Compounds






14. 90° - d^2sp^3






15. Diatomic Molecules






16. The entropy of a pure perfectly formed crystal @0K is 0






17. Kinetic Energy is proportional to ______






18. Pairs of electrons localized on an atom






19. Energy involved in gaining an electron to become a negative ion






20. Oxidation # of Oxygen






21. Change that occurs at constant temperature






22. Oxidation # of Hydrogen






23. Phase change from gas to solid






24. The rest of the universe (in thermodynamics)






25. A measure of randomness or disorder






26. Specific heat of water






27. CrO4²?






28. Heat capacity formula






29. 1/[A] vs. time is a ...-order reaction






30. [A]=-kt + [A]0






31. 120° - sp^2






32. Ability of an atom in a molecule to attract shared electrons to itself






33. J/°Cmol or J/Kmol






34. neutron (symbol)






35. SI unit of energy; Kg*m^2/s^2






36. Boiling point - melting point - viscosity - vapor pressure - surface tension






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






38. Dirrect Method Formula






39. Matter can't be created nor destroyed






40. Amount of heat needed to change a system by 1°C






41. 90°&120° - dsp^3






42. Ending for alcohols






43. All forms of energy except for heat






44. Carbonates - Hydroxides - Oxides - Phosphates - Sulfides






45. AX4E2






46. % yield






47. Occupies the space above and below a sigma bond






48. A molecule having a center of positive charge and a center of negative charge






49. 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






50. Ketone suffix