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






2. Mol of solute/kg of solvent






3. AX2E - AX2E2






4. E=mc^2






5. High-speed electrons






6. Equation to find Ea from reaction rate constants at two different temperatures






7. Pairs of electrons localized on an atom






8. A given compound always has exactly the same proportion of elements by mass






9. Ionizes to produce OH- Ions






10. Has values from 0 to (n-1); tells shape of atomic orbitals






11. Energy needed to break a bond






12. Mass percent






13. Point at which the titrated solution changes color






14. Chemical composition of dry ice






15. NH4¹?






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






17. ClO3²?






18. The reactant in the reduction reaction that forces the oxidation reaction to occur






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






20. CN¹?






21. Compound in which there is a bond between a metal and a non-metal; when naming - pay attention to ionic charges on periodic table (may be reduced)






22. Kinetic Energy of an individual particle formula






23. ln[A]=-kt + ln[A]0






24. How to Find a Weighted Average






25. Actual Yield/Theoretical Yield*100%






26. Peak of energy diagram






27. Energy required to break a bond






28. Speed of light - C






29. .69/k






30. Puts H? into solution






31. AX3






32. CrO4²?






33. 760 mmHg - 760 torr






34. Hydroxides are soluble or insoluble?






35. H?+NH3?NH4






36. #NAME?






37. Point at which solid?liquid occurs






38. Delta H (AH) = ?






39. U(rms)=(3RT/M)^1/2






40. Thickness






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






42. Freezing point depression formula






43. 96 -485 C/mol e-






44. Composition Formula






45. l=1






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






47. AX4E






48. 1.Calculate moles of each atom in molecule 2.Divide each mole number by smallest mole number 3.If necessary - multiply every mole number to get a whole number 4.Moles of each atom is subscript in empirical formula






49. (organics) nine carbons






50. Has values 1 -2 -3 -...; tells energy levels