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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. Variable for spin of electron (+.5 or -.5)






2. % yield






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






4. Force that holds atoms together






5. Melting






6. 101 -325 Pa






7. Diatomic Molecules






8. Volume of gas @STP






9. The amount of energy/heat required to raise some substance 1 degree C






10. Metal oxide + H20 ->






11. A solution that resists a change in its pH






12. Type of system in which the energy may escape - but the mass is conserved






13. Elements in groups 3-12






14. J/Cmol or J/Kmol






15. Ketone suffix






16. R=






17. Forward rxn occurs when






18. Similar to atomic orbitals - except between molecules






19. Loss of electrons - increase in oxidation #






20. Molarity (M)






21. SO3?






22. Symbol for Total Heat absorbed or released






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






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






25. Oxidation # of Hydrogen






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






27. Point at which vapor pressure=air pressure above






28. Degree of disorder in a system






29. 1.Volume of individual particles can be assumed to be zero 2.The particles are in constant motion - which causes pressure 3.Particles exert no forces on each other 4.The average kinetic energy of the particles is directly affected by temperature(K)






30. A solution that resists a change in pH - contains both a weak acid and its conjugate base






31. Work = ?






32. 109.5 - sp^3






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






34. The total energy of the universe is constant - all systems tend towards minimum energy






35. 760 mmHg - 760 torr






36. Speed of light - C






37. AX4E






38. NO3?






39. High-speed electrons






40. Energy needed to vaporize a mole of a liquid






41. The rest of the universe (in thermodynamics)






42. K






43. Energy required for liquid?gas






44. Ideal Gas Law Formula






45. (organics) six carbons






46. Oxidation # of free elements






47. Electron (symbol)






48. R in instances that pertain to energy






49. r=k[A]^2






50. Composition Formula