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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. (organics) seven carbons






2. Oxidation # of Hydrogen






3. pH=






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






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






6. Organic w/ -O-






7. All forms of energy except for heat






8. Osmotic pressure=MRT






9. Molarity (M)






10. An equilibrium expression






11. If a system @equilibrium is stressed - the system will shift so as to reestablish equilibrium


12. BrO3¹?






13. Group 1 and heavier Group 2 bases






14. Wavelength symbol






15. Consists of a complex ion - a transition metal with attached ligands - and counterions






16. Mass reactants= mass products






17. Instrument used to measure the pressure of a not-atmospheric gas (open or closed system)






18. STP






19. For colligative properties for electrolytes - the # of mols of ions/ mols of solute


20. All cations are soluble with sulfate EXCEPT






21. PO4³?






22. Newton's Second Law






23. Resistance to flow






24. Organic reaction in which water breaks apart a molecule (splitting into two hydroxides)






25. Degree of disorder in a system






26. When ____ significant digits - round answer to least decimal place






27. Thickness






28. If anion ends in -ate - acid name ends in...






29. In a titration - the point where the indicator changes (just after moles of solid are equal to moles of base)






30. Loss of electrons - increase in oxidation #






31. The weighted average of all the isotopes that an atom can have (in g/mol)






32. x can be ignored when % ionization is <5%






33. Carbon - hydrogen - oxygen compounds






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






35. Temperature-pressure point after which gas can no longer form liquid






36. Symbol for the heat absorbed or lost molecularly (PER MOLE)






37. Carbonates - Hydroxides - Oxides - Phosphates - Sulfides






38. A measure of randomness or disorder






39. r=k






40. Absorbs/takes in heat (positive value)






41. Substances w/ critical temperatures below 25°C






42. A single substance that may be an acid or a base (i.e. water)






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






44. AX5E






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






46. OH¹?






47. Oxoacid solution (such as HSO4-) forms...






48. Ionizes to produce H+ ions






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. =vM2/M1