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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. Chemical composition of dry ice






2. Each orbital can hold two e?s each w/ opposite spins






3. Phase change from solid to gas






4. Variable for energy of e- - goes from 1 -2 -3 on up






5. Half-life equation






6. Anions or cations as needed to produce a compound with non net charge






7. Combined Gas Law Formula






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






9. Spontaneous emission of radiation






10. Expresses how the concentrations depend on time






11. Describe various properties of one orbital






12. Determined by the formula h/m(in kg)v - (v=velocity)






13. Absorbs/takes in heat (positive value)






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






15. R in ideal gas law






16. Lowers activation energy






17. Loss of electrons - increase in oxidation #






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






19. l=2






20. R=






21. Solid to liquid






22. A weak acid that changes color at or near the equivalence point






23. Horizontals on the periodic table






24. Atoms with the same number of protons but a different number of neutrons






25. HF+ OH??H2O






26. C=2.9979*10^8 m/s






27. 1 sigma bond






28. Elements which have unpaired electrons and highly affected by magnetic fields






29. 90°&120° - dsp^3






30. A solid or gas that can be formed when 2 or more aqueous reactants come together






31. Group 1 metals






32. When n=4 ->2 - color=






33. Amount of product produced when limiting reactant is used up






34. Nonmetal oxide + H2O ->






35. SO4²?






36. The reactant in the oxidizing reaction that forces the reduction reaction to occur






37. Organic w/ -O-






38. AX3E2






39. AX4E






40. Mole Fraction






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






42. Symbol for Total Heat absorbed or released






43. Resistance to flow






44. Atomic #






45. Point at which vapor pressure=air pressure above






46. A solution used in titrations whose concentration is known






47. Driving force of the electrons






48. Energy (definition)






49. Proton donors






50. Reactant that's completely used up in a chemical reaction