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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. OH¹?






2. Everything in the universe that is not defined by you as part of the system






3. .69/k






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






5. Average speed of gas






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

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7. The line running between the atoms






8. The total entropy is always increasing - all systems tend towards maximum entropy






9. ... compounds are most conductive






10. Driving force of the electrons






11. Carbon - hydrogen - oxygen compounds






12. The part of the universe one is focused upon (in thermodynamics)






13. Wavelength symbol






14. Melting






15. Solid to liquid






16. E=mc^2






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






18. AX5






19. If K<1 - then Gº>0 and reaction will be...at chemical equilibrium






20. These orbitals are diagonal






21. Pairs of electrons localized on an atom






22. Cr2O7²?






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






24. Molarity (M)






25. The measurement of heat changes






26. Verticals on the periodic table






27. Energy (definition)






28. The intermolecular attractions resulting from the constant motion of electrons and the creation of instantaneous dipoles






29. How to Find an Empirical Formula Given Grams






30. r=k






31. Henry's Law - solubility of gases is directly proportional to the partial pressure of the gas






32. F¹?






33. Tools NEEDED for dilution






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






35. 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






36. Molality =






37. Substance in which something is dissolved in a solution (higher [ ])






38. Bomb Calorimeter






39. Rate of Diffusion/Effusion formula






40. Color of Cs (flame test)






41. 6.022x10^23






42. Substances that form H+ when dissolved in water; proton donors






43. (organics) seven carbons






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






45. Absorbs/takes in heat (positive value)






46. Variable for orientation of orbital (-1 through +1)






47. Change that occurs at constant temperature






48. Energy required for melting to occur






49. Bond bond in which atoms aren't so different that electrons are completely transferred but are different enough that unequal sharing occurs






50. Two molecules with identical connectivity but different geometries