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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. 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






2. Same molecular formula but different structure






3. Use the Greek root for the number of carbons followed by the ending - - ane






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






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






6. When boat flips






7. When bond angles deviate from ideal values






8. Iso - neo - cyclo






9. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation






10. O3






11. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.






12. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced






13. Non mirror image of configurational isomers. cis and trans alkenes are them. possible when a molecule has two or more stereogenic centers that differ at some but not alll of the centers. they require multiple chiral centers.






14. Goal is to produce most stable carbocation


15. Share molecular formula but have different chemical and physical properties






16. N - l - ml - ms






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






18. Combustion reaction occurs through a radical process






19. Charged - need electrons






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






21. No double bonds. it has the maximum number of hydrogens.






22. One s and three p orbitals






23. Compounds with halogen






24. Carbon with four different substituents and lack a plane of symmetry






25. Rotations cancel each other out therefore no optical activity






26. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image






27. Diols with hydroxyl group on adjacent carbon






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






29. Lowest priority group projects into the page






30. Carbonyl located in middle or somewhere in chane. Named with One






31. 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.






32. Sharing of electron between atoms






33. 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






34. Zn/h or CH3/s with ozonolysis






35. What are the best leaving groups?






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






37. A = observed rotation / concentration * length






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






39. Describes the exact spatial arrangement of groups of atoms independent of other molecules.






40. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z






41. Name for propanal






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






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






44. F - CL - Br - I






45. If reagent has a bunch of oxygen






46. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal






47. Name for mathanal






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






49. Refers to the =CH2 group






50. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule