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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. 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






2. Alphabetical order of alkane rxn






3. Goal is to produce most stable carbocation

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4. Common name for ethyne






5. Nucleus lover. electron rich species that are attracked to charged atoms






6. Most favorable of staggared conformations






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






8. M - chloroperoxybenzoic acid






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






10. A sigma bond and two pi bonds






11. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution






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






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






15. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.






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






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






18. Rotations cancel each other out therefore no optical activity






19. Spatial arrangement of the atoms or groups of a sterioisomer






20. Charged - need electrons






21. Name for ethanal






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






23. Combustion reaction occurs through a radical process






24. F - CL - Br - I






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






26. Highest energy no separation. or 120 separation.






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






28. Transfer of electrions from one atome to another






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






30. Nitrogen containing compound - longest chain attached to nitrogen used in backbone. use e and replace with AMINE. if more complex molecule present - use prefix amino. IF additional group added - use N-






31. When bond angles deviate from ideal values






32. Not solvated






33. Sharing of electron between atoms






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






35. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.






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






37. Formed by mixing different types of orbitals






38. When boat flips






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






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






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






42. Zn/h or CH3/s with ozonolysis






43. Diols with hydroxyl group on adjacent carbon






44. Is bonded to only one other carbon atom






45. O3






46. What is produced when o3 with lialh4 or nabh4






47. Kmno4






48. Compounds with halogen






49. Name for mathanal






50. Methyl are 60 degrees apart. kinda stable