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MCAT Organic Chemistry

Subjects : mcat, science
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. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced






2. Methyl are 60 degrees apart. kinda stable






3. Results when nonadjacent atoms or groups compete for space. dominant source of energy in flagpole interactions of the boat conformation. thus it goes in various conformations like chair boat and twist.






4. When boat flips






5. Kmno4






6. Most similar. same molecule only at different points in their rotation. show them with newmans projections






7. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition






8. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.






9. Rotations cancel each other out therefore no optical activity






10. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton






11. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart






12. Transfer of electrions from one atome to another






13. Hydrocarbon with one or more carbon carbon triple bond






14. Two hydroxyl groups






15. Carbon carbon triple bonds. Suffix-yne.






16. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.






17. If reagent has a bunch of oxygen






18. Name for mathanal






19. Formed by mixing different types of orbitals






20. How many stereoisomers can a molecule have with n chiral centers






21. One s and two p 120 degree apart






22. What is produced when o3 with lialh4 or nabh4






23. Highest energy no separation. or 120 separation.






24. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon






25. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.






26. Arise from angle strain - torsional strian and nonbonded strain






27. Compounds with halogen






28. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc






29. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane






30. What are the best leaving groups?






31. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space






32. Moleculse that have the opposite configuration at their one chiral center. or if multiple chiral centers - must have the opposite configuration at every one of their chiral centers to be enantiomers. identical physical properties and much of the same






33. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans






34. If a compound is able to rotate plane polarized light.






35. Diols with hydroxyl group on adjacent carbon






36. One s and three p orbitals






37. Results when cyclic molecules must assume conformations that have eclipsed interactions






38. F - CL - Br - I






39. Di - tri - t - sec - n -






40. Occur when a molecule is broken down by heat. used to reduce the avverage molecular weight of heavy oils. c - c - bonds are cleave dand make small chain alkyl radicals that recombine to form different alkanes






41. Common name for ethyne






42. Solvents with protons in solution - e.g. water or alcohol. large atoms tend to be better nucleophiles in here because they can shed the solvating protons around them and are more polarizable






43. Charged - need electrons






44. Chain of carbons connected by single bonds with hydrogen atoms attached.






45. Sharing of electron between atoms






46. Iso - neo - cyclo






47. Reaction of alkane with oxygen to form carbon dioxide - water and heat.






48. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol






49. Lowest priority group projects into the page






50. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.